bj carter power tong diagrams pricelist

New Carter Tool Co. Inc. M-Series 2.0 power sucker rod tong, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH street ells, one set of size equipment and safety sling with clevis.

New Carter Tool Co. Inc. M-Series 4.0 power sucker rod tong, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH street ells, one set of size equipment and safety sling with clevis.

New Carter Tool Co. Inc. M-Series 5.0 power sucker rod tong, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH street ells, one set of size equipment and safety sling with clevis.

New Carter Tool Co. Inc. M-Series 5.5 power sucker rod tong, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH street ells, one set of size equipment and safety sling with clevis.

New Carter Tool Co. Inc. M-Series 7.5 power sucker rod tong, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH street ells, one set of size equipment and safety sling with clevis.

Tongs - Power - New Carter Tool Co. Inc., CT93R Hydraulic powered tubing tong. Complete with 2-3/8" to 3-1/2" jaw assemblies, standard motor, torque gauge assembly, pressure relief valve... More Info

Tongs - Power - New Carter Tool Co., Inc. 5-1/2" CTSX Hydraulic Tubing Tong with heavy case and cover; complete with rigid hanger assy., suspension spring assy., front end control assy.,... More Info

Tongs - Power - New Carter Tool Co. Inc. M-Series power sucker rod tongs, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH s... More Info

Tongs - Power - New Carter Tool Co., Inc. 4-1/2" RSX Hydraulic Tubing Tong with heavy case and cover; complete with rigid hanger assy., suspension spring assy., front end control assy., ... More Info

Tongs - Power - BJ sucker rod tong adopts advanced sucker rod or tubing technology and has a compact structure, high reliability and is safe and convenient to operate.

Tongs - Power - New Carter Tool Co. Inc., CT93R Hydraulic powered tubing tong. Complete with 2-3/8" to 3-1/2" jaw assemblies, standard motor, torque gauge assembly, pressure relief valve... More Info

Tongs - Power - New Carter Tool Co., Inc. 5-1/2" CTSX Hydraulic Tubing Tong with heavy case and cover; complete with rigid hanger assy., suspension spring assy., front end control assy.,... More Info

Tongs - Power - New Carter Tool Co. Inc. M-Series power sucker rod tongs, complete with spring hanger assy., gate assy., front end control assy., pressure gauge assy., two 90 degree XH s... More Info

Tongs - Power - New Carter Tool Co., Inc. 4-1/2" RSX Hydraulic Tubing Tong with heavy case and cover; complete with rigid hanger assy., suspension spring assy., front end control assy., ... More Info

Tongs - Power - D D 58-93-2-R Power Tubing Tong is smaller, lighter, and faster than the Foster 5893R. The D D 58-93-2-R Tong is capable of gripping tubulars from 1 5/16" to 7" o.d. More Info

Tongs - Power - FARR TONG MODEL KT 14,000 RINEER GA37 MOTOR, LIFT VALVE ASSEMBLY TORQUE CAPACITY: 50,000 FT/LB SIZE RANGE 4 1.2-14 WITH SAFETY DOOR MOST SIZES OF FARR POWER TONGS ARE IN ... More Info

Tongs - Power - FARR TONG MODEL KT20,000 STAFFA 080 MOTOR, LIFT VALVE ASSEMBLY TORQUE CAPACITY: 50,000 FT/LB SIZE RANGE: 7-20 MOST SIZES OF FARR POWER TONGS ARE IN HOUSTON, IN STOCK READ... More Info

Tongs - Power - FARR MODEL KT5500 HYDRAULIC TUBING TONG C/W 2 SPEED RINEER MOTOR, SIZE RANGE: 2-3/8 IN. - 5-1/2 IN. OD, TORQUE RTED: 18,700 FT/LB C/W SAFETY DOOR MOST SIZES OF FARR POWER... More Info

Tongs - Power - FARR TONG MODEL KT5500 TORQUE CAPACITY: 18000 FT/LB SIZE RANGE: 2 1/16-5 1/2 OD WITH SAFETY DOOR MOST SIZES OF FARR POWER TONGS ARE IN HOUSTON, IN STOCK READY FOR IMMEDIA... More Info

Tongs - Power - FARR TONG MODEL KT5500 5 1/2 IN. TONG TORQUE CAPACITY: 18,000 FT/LB SIZE RANGE: 2 1/16-5 1/2 IN. OD, RINEER 15-13 MOTOR, HIGH TORQUE CLINCHER BACKUP TRIPLE VALVE ASSEMBLY... More Info

Tongs - Power - FARR TONG MODEL KT7585 TORQUE CAPACITY: 25000 FT/LB SIZE RANGE: 2 1/16-8 5/8 OD WITH SAFETY DOOR MOST SIZES OF FARR POWER TONGS ARE IN HOUSTON, IN STOCK READY FOR IMMEDIA... More Info

Tongs - Power - FARR TONG MODEL KT7585 8 5/8 IN. TONG TORQUE CAPACITY 25,000 FT/LB SIZE RANGE: 2 1/16-8 5/8 IN. OD, RINEER 15-15 MOTOR CLINCHER BACKUP, TRIPLE VALVE MOST SIZES OF FARR PO... More Info

Tongs - Power - FARR TONG MODEL LW9625 TORQUE CAPACITY 12000 FT/LB SIZE RANGE 2 7/8 -9 5/8 OD WITH SAFETY DOOR MOST SIZES OF FARR POWER TONGS ARE IN HOUSTON, IN STOCK READY FOR IMMEDIATE... More Info

Tongs - Power - Farrs newest tubular connection tool offers a significantly reduced rig footprint, while continuing to deliver power & uncompromising reliability. The simple design drast... More Info

Tongs - Power - Farr Canada"s newest tubular connection tool offers a significantly reduced rig footprint, while continuing to deliver power and uncompromising reliability. The simple de... More Info

1 Slip Inserts, Tong Dies, and Jaws Index Page Slip & Bowl Inserts Page 3-1/2" TS 100 Slip /2" Ortco Slip /2" Ortco Slip Rotary Slip Inserts Baash Ross DU Varco SDS, SDML, SDXL Woolley type B: 4-1/2" & 5-1/2" Woolley type XL: 4-1/2 & Slip Type Elevator Inserts BJ LYT Slip Elevator BJ MYT Slip Elevator BJ YT Slip Elevator BJ HYT Slip Elevator BJ YC Slip Elevator Elevator/Spider Inserts BJ Elevator/Spiders Varco, Blohm + Voss Elevator/Spider Drill Collar Slip Inserts Baash Ross C & C Varco DCS-S, DCS-R, DCS-L Woolley Type A Casing Slip Inserts Baash Ross UC-3 & UC Varco CMS-XL Woolley Type C Tubing Spider Inserts BJ 50 & 100 Ton Cavins Model B Cavins Model C & Top Load Tubing Spider Inserts (Cont.) Page Cavins Model F Hydra Rig Model 150 & Guiberson T-40 & T Oil Country Type G Mission Shallow Well Slips Mission Deep Well Slips Manual Tong Dies Reducing Tong Dies Tong Die Drivers BJ Type Tong Dies Blohm + Voss Tong Dies BVM Tong Dies Web Wilson Tong Dies Woolley Manual Tong Dies Power Tongs - Jaws & Inserts BJ Jaws, Bushings & Inserts Foster & 58-93R Drag Ring Ass"y Foster & 58-93R Jaws & Inserts Cesco/Gill Tong Jaws & Inserts & Drag Ring Ass"y & Jaws & Inserts Back-up Tool Jaws & Inserts Back-up Tool Jaws & Inserts Misc. Inserts & Tong Dies Kelco K-20, K-25, K Hillman Kelley 500-C Jaw/Die Combination.. 24 Hillman Kelley Wrap Around Tongs Eckel Power Tong Dies Sucker Rod Elevator Plates Kelly Spinner Model 77 Jaws sales@rigtool.com (877) fax (817)

6 BJ-20, 40, 75 and 150 ton Slip Elevators* Cat. # Ref. # Description Wt. Ea. Qty. Ea. Box LYT Replacement Inserts Reducing Insert, 2-1/16" x 1" (1.315") Reducing Insert, 2-1/16" x 1-1/4" (1.660") Reducing Insert, 2-1/16" x 1-1/2" (1.900") Basic Insert, 2-1/16" x 2-1/16" *Interchangeable with: M&W Oil Tools, Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. MYT Replacement Inserts Reducing Insert, 2-7/8" x 1" (1.315") Reducing Insert, 2-7/8" x 1-1/4" (1.660") Reducing Insert, 2-7/8" x 1-1/2" (1.900") Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. YT Replacement Inserts Reducing Insert, 2-7/8" x 1" (1.315") Reducing Insert, 2-7/8" x 1-1/4" (1.660") Reducing Insert, 2-7/8" x 1-1/2" (1.900") Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) Reducing Insert, 3-1/2" x 2-7/8" Basic Insert, 3-1/2" x 3-1/2" *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. HYT Replacement Inserts Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) Reducing Insert, 3-1/2" x 2-7/8" Basic Insert, 3-1/2" x 3-1/2" *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 4 sales@rigtool.com (877) fax (817) Cat. 2012

7 Cat. # Description Ref. # BJ-Elevator/Spider Replacement Inserts* Slip Size Size (OD) Number of Inserts Required Cat sales@rigtool.com (877) fax (817) Page 5 YC 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Basic Insert /2" 3-1/2" Basic Insert " 4" Basic Insert /2" 4-1/2" Basic Insert /2" 5-1/2" Basic Insert " 7" Basic Insert /8" 7-5/8" Basic Insert /8" 8-5/8" Basic Insert /8" 8-7/8" Basic Insert /8" 9-5/8" Basic Insert /4" 10-3/4" Basic Insert /8" 10-7/8" Basic Insert /4" 11-3/4" Basic Insert /2" 12-1/2" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Cat. # Description Ref. # BASIC INSERTS - YC THROUGH 1,000 TONS REDUCING INSERTS - YC THROUGH 1,000 TONS* Slip Size Size (OD) YC Number of Inserts Required 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Reducing Insert /2" 2-3/8" Reducing Insert /2" 2-7/8" Reducing Insert /2" 3-1/2" Reducing Insert /2" 4" Reducing Insert /2" 4-1/2" Reducing Insert /2" 5" Reducing Insert " 5-3/4" Reducing Insert " 6" Reducing Insert " 6-5/8" Reducing Insert /8" 6-5/8" Reducing Insert /8" 7" Reducing Insert /8" 7-5/8" Reducing Insert /8" 7-3/4" Reducing Insert /8 7-7/ Reducing Insert /8" 8" Reducing Insert /8" 8-1/8" Reducing Insert /8" 8-1/4" Reducing Insert /8" 8-3/8" Reducing Insert /8" 8-1/2" Reducing Insert /8" 8-5/8" Reducing Insert /8" 8-3/4" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc.

8 BJ Elevator/Spider Replacement Inserts* REDUCING INSERTS - YC THROUGH 1,000 TONS Cat. # Description Ref. # Slip Size Size (OD) YC Number of Inserts Required 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Reducing Insert /8" 8-3/4" Reducing Insert /8" 8-5/8" Reducing Insert /4" 9-5/8" Reducing Insert /4" 9-7/8" Reducing Insert /8" 9-5/8" Reducing Insert /8" 9-3/4" Reducing Insert /8" 9-7/8" Reducing Insert /8" 10" Reducing Insert /8" 10-1/8" Reducing Insert /8" 10-1/4" Reducing Insert /8" 10-3/8" Reducing Insert /8" 10-1/2" Reducing Insert /8" 10-5/8" Reducing Insert /8" 10-3/4" Reducing Insert /4" 10-3/4" Reducing Insert /4" 10-7/8" Reducing Insert /2" 11-1/4" Reducing Insert /2" 11-3/8" Reducing Insert /2" 11-1/2" Reducing Insert /2" 11-5/8" Reducing Insert /2" 11-3/4" Reducing Insert /2" 11-7/8" Reducing Insert /2" 12" Reducing Insert /2" 12-1/8" Reducing Insert /2" 12-1/4" Reducing Insert /2" 12-3/8" Reducing Insert /4" 11-3/4" Reducing Insert /4" 11-7/8" Reducing Insert /8" 12-1/2" Reducing Insert /8" 12-3/4" Undersize Insert /8" 13-1/2" Reducing Insert " 12-3/4" Reducing Insert " 12-7/8" Reducing Insert " 13" Reducing Insert " 13-1/8" Reducing Insert " 13-1/4" Reducing Insert " 13-3/8" Reducing Insert " 13-1/2" Reducing Insert " 13-5/8" Reducing Insert " 13-3/4" Reducing Insert " 13-7/8" Reducing Insert " 18-5/8" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 6 sales@rigtool.com (877) fax (817) Cat. 2012

12 BJ-50 and 100 Tubing Spiders* BJ 50 Ton Spider Replacement Inserts Reducing Insert for BJ 50-Ton, 2-7/8" x 1" (1.315") Reducing Insert for BJ 50-Ton, 2-7/8" x 1-1/4" (1.660") Reducing Insert for BJ 50-Ton, 2-7/8" x 1-1/2" (1.900") Reducing Insert for BJ 50-Ton, 2-7/8 x 2-1/ DM Reducing Insert for BJ 50-Ton, 2-7/8 x 2-3/ DM Basic Insert for BJ 50-Ton, 2-7/8 x 2-7/ Reducing Insert for BJ 50-Ton, 3-1/2 x 2-7/ DM Basic Insert for BJ 50-Ton, 3-1/2 x 3-1/ BJ 100 Ton Spider Replacement Inserts Reducing Insert for BJ 100-Ton, 2-7/8" x 1" (1.315") Reducing Insert for BJ 100-Ton, 2-7/8" x 1-1/4" (1.660") Reducing Insert for BJ 100-Ton, 2-7/8" x 1-1/2" (1.900") Reducing Insert for BJ 100-Ton, 2-7/8 x 2-1/ DM Reducing Insert for BJ 100-Ton, 2-7/8 x 2-3/ DM Basic Insert for BJ 100-Ton, 2-7/8 x 2-7/ Reducing Insert for BJ 100-Ton, 3-1/2 x 2-7/ DM Basic Insert for BJ 100-Ton, 3-1/2 x 3-1/ * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Cavins B Tubing Spiders** Chevron Inserts TB /8 Chevron Insert, 2-3/ TB /8 Chevron Insert, 2-7/ TB /2 Chevron Insert, 3-1/ Circular Button Inserts TB /8 Circular Button Insert, 2-3/ TB /8 Circular Button Insert, 2-7/ TB /2 Circular Button Insert, 3-1/ Replacement Inserts TB Reducing Insert for Cavins B, 2-7/8" x 1" (1.315") TB /4 Reducing Insert for Cavins B, 2-7/8" x 1-1/4" (1.660") TB /2 Reducing Insert for Cavins B, 2-7/8" x 1-1/2" (1.900") TB /16 Reducing Insert for Cavins B, 2-7/8" x 2-1/16" TB /8 Reducing Insert for Cavins B, 2-7/8" x 2-3/8" TB /8 Basic Insert for Cavins B, 2-7/8" x 2-7/8" ** Interchangeable with: Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 10 sales@rigtool.com (877) fax (817) Cat. 2012

17 Reducing Tong Die - Reference Chart* 1-1/4" Die Slot Cat. # Ref. # Size Description Wt N/A 9/16" x 1-1/4" x 3-7/8" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5-7/8" 1/8 Reduction Tong Die N/A 5/8" x 1-1/4" x 3-7/8" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5-7/8" 1/4 Reduction Tong Die N/A 11/16 x 1-1/4 x 3-7/8 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5-7/8 3/8 Reduction Tong Die N/A 3/4" x 1-1/4" x 3-7/8" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5-7/8" 1/2 Reduction Tong Die N/A 13/16 x 1-1/4 x 3-7/8 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 5 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 x 5-7/8 5/8 Reduction Tong Die N/A 7/8 x 1-1/4 x 3-7/8 3/4 Reduction Tong Die N/A 7/8 x 1-1/4 x 5 3/4 Reduction Tong Die N/A 7/8 1-1/4 x 5-7/8 3/4 Reduction Tong Die N/A 15/16 x 1-1/4 x 3-7/8 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5-7/8 7/8 Reduction Tong Die N/A 1" x 1-1/4" x 3-7/8" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5-7/8" 1 Reduction Tong Die 1.15 * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Tong Die Drivers Cat. # Ref. # Description Wt. Ea. Qty. Req. Box Tong Die Drivers N/A Tong Die Driver, A/R N/A Tong Die Driver, 1-1/ A/R Cat sales@rigtool.com (877) fax (817) Page 15

18 Tong Die Cross - Reference Chart* 5/8" Die Slot Cat. # Ref. # Size Application Wt /8" x 5/8" x 1-15/16" BJ Type S & WS Tongs Eckel 4-1/2" Tong 2-1/16" Jaw /8" x 5/8" x 4-1/2" Hillman Kelley Standard: All Sizes Drill Pipe & Casing Power Tongs S /8" x 1" x 1-7/16" (w/slot) BJ Powermatic & Hydratorc Tong w/ 1" Die Slots (4-1/8" x 4-1/2") S 6209S 3/8" x 1" x 1-15/16" (w/slot) BJ Type MS & MS Backup /8" x 1" x 2-1/2" Eckel 4-1/2" Tong, 4" & 4-1/2" Jaw.25 1" Die Slot 3/8" x 1" x 2-5/8" S BJ CTS 4-1/2", 5" & 5-1/2" Tongs.15 (w/slot) /8" x 1" x 3-7/8" BJ Powermatic Tong, Farr Power Tong, Weatherford 5-1/2" & 7-5/8" Tong /8" x 1" x 4-1/4" Web Wilson Type C, D, /8" x 1" x 4-1/2" Hillman Kelley Backup Die /8" x 1" x 5-3/4" Web Wilson Type B & Old Style AAX BJ B+V BV BD* /2" x 1-1/4" x 3-7/8" BJ Drill Pipe Power Tongs Eckel 5-1/2" to 30" Power Tongs Farr Power Tongs /4" Die Slot BD* /2" x 1-1/4" x 5" BJ Type SDD, C, F, & LF Tong BJ Power Casing Tongs (4-1/2" to 13-3/8") Woolley Type Super C, SLF & SDD Tong Eckel Model 850 Web Wilson B+V BV-25, BV-35, BV BD* /2" x 1-1/4" x 5-7/8" BJ Type B & DB Tongs Web Wilson AAX, H & AAX-ST-160 Woolley Types Super A Super B Rotary & Super B Casing Tongs B+V, BV-55, BV-57, BV-65, BV * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. *Blue Diamond Tong Dies Available for 1-1/4 Die Slots Page 16 sales@rigtool.com (877) fax (817) Cat. 2012

19 BJ 4-1/2 R, RS, Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (3-1/2" Jaw & Bushing) S Tong Die, 3/8" x 1" x 1-7/16" w/slot (4-1/2" Jaw & Bushing) * Interchangeable with: BJ, Carter Tool, Oil Country, 4-1/2 Open Face Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 17

20 BJ - 5-1/2 CTS Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Jaw Assembly, 5-1/ A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Bushing Assembly, 5-1/ A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (4-1/2" & 5-1/2 Bushing Only) S Tong Die, 3/8" x 1" x 2-5/8 w/slot (4-1/2" & 5-1/2 Jaw Only) * Interchangeable with: BJ, Carter Tool, Oil Country, 5-1/2 Open Face Tubing Tongs Page 18 sales@rigtool.com (877) fax (817) Cat. 2012

21 58-93R Foster Tubing Tongs Drag Ring Assemblies Cat. # Ref. # Description Wt. Ea. Qty. Req. Box 1-5/16" to 3-1/2" (5" Bore) Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 1" Long A/R Drag Spring, 7/8" Long A/R Set Screw, 1" x 1" A/R Cover Plate (5" Bore) A/R Guide Bell 1-5/16" to 1-1/2" (1.900") A/R 3-1/2" to 6-1/16" (6-1/4" Bore) Drag Ring Assembly (6-1/4" Bore, 1" Pins) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 7/8" Long (Overall = 3/4 ) N/A 5 A/R Drag Spring, 7/8" Long A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate (6-1/4" Bore) N/A 1 A/R Guide Bell (6-1/4" Bore) N/A 1 A/R 4" to 5-1/2" (7-1/4" Bore) Drag Ring Assembly (7-1/4 Bore, 3/4" Pin) A/R Drag Ring Pin (3/4" x 6-1/4") N/A 5 A/R Drag Plug, 5/8" Long A/R Drag Spring, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (7-1/4" Bore) N/A 1 A/R Guide Bell (7-1/4" Bore) N/A 1 A/R 6-5/8" to 7" (7-7/8" Bore) Drag Ring Assembly (7-7/8" Bore: 5/8" Pin) A/R Drag Ring Pin (5/8 x 6 ) A/R Drag Plug, 1/2" Long A/R Drag Spring A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate, 5/8" Pins: 10 (7-7/8" Bore) N/A 1 A/R Guide Bell (7-7/8" Bore) N/A 1 A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 19

22 58-93R Foster Tubing Tongs Single Action Tubing Jaws & Tong Dies* 1-5/16" to 1-1/2" (1.900") Jaw Assembly Jaw, 1-5/16" to 1-1/2" (1.900") A/R Tong Die, 1", 1-1/4" & 1-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 1-7/8" to 2-3/8" Jaw Assembly Jaw, 1-7/8" to 2-3/8" A/R Tong Die, 2-1/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die, 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-7/8" to 3-1/2" Jaw Assembly Jaw, 2-7/8" to 3-1/2" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-3/4" Jaw Assembly Jaw, 3-1/2" to 4-3/4" A/R Insert, 3-1/2" to 4-1/2" Insert, 4" to 4-3/4" Insert Screw, 3/8" x 2-3/4" w/nut A/R 5" to 6-1/16" Jaw Assembly Jaw (Solid) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tubing Tongs Single Action Casing Jaws & Tong Dies* 4" to 4-1/2" Jaw Assembly Jaw, 4" to 4-1/2" A/R Insert, 4" to 4-1/2" N/A Insert, 5-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 6-5/8" to 7" Jaw Assembly Jaw (Solid), 6-5/8" N/A Jaw (Solid), 7" * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 20 sales@rigtool.com (877) fax (817) Cat. 2012

23 58-93R Foster Tongs Double Action Tubing Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw, 1" to 1-5/16" N/A Insert, 1" to 1-1/16" N/A Insert Screw, 3/8" x 2-3/4" w/nut A/R 2" Jaw Assembly Jaw, 2" Insert, 2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 3-11/16" Jaw Assembly Jaw to Double Acting, 2-3/8" to 3-11/16" Insert-Double Acting, 2-3/8" to 3-1/16" Insert-Double Acting, 2-7/8" to 3-1/2" Insert-Double Acting, 3-1/2" Insert-Double Acting, 3-11/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tongs - Cesco/Gill Style Single Action Tubing Jaws & Tong Dies* 1-1" to 2-7/8" Jaw Assembly Use Foster Type Tong Jaws 2-7/8" to 3-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-4 Insert, 2-7/8" to 3-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505 Insert, 3-1/2" to 4-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 4" to 5" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-1 Insert, 4" to 5" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 21

24 58-93R Foster Tongs - Cesco/Gill Style Single Action Casing Jaws & Tong Dies* 4" to 5-1/2" Jaw Assembly J506 Jaw (4" to 5-1/2") w/ 3/4" pin hole A/R N505-2 Insert Casing, 4" to 4-1/2" A/R N505-3 Insert Casing, 5" to 5-1/2" A/R N507-1 Insert Screws, 5/16" w/nuts A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Drag Ring Assembies* 1" to 3-1/2" Tubing Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin, 5/8 x A/R Drag Spring, 1/2" Long A/R Drag Plug, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (5" bore) A/R Guide Bell (4-3/4 Bore) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Tubing Tong Single Action Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw (Solid), 1" to 1-5/16" A/R 1-5/8" to 2-1/16" Jaw Assembly Jaw, 1-5/8" to 2-1/16" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 3-1/2" (only) Jaw Assembly Jaw (Solid), 3-1/2" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 22 sales@rigtool.com (877) fax (817) Cat. 2012

25 Foster 147 Back-up - Jaws & Tong Dies* 1-5/16" to 2-1/16" Back-up Jaw Assembly Back-Up Jaw, 1-5/16" to 2-1/16" Tong Die, 1" to 1-1/2" Insert Screw, 3/8" x 1" A/R 2-3/8" to 3-3/4" Back-up Jaw Assembly Back-Up Jaw, 2-3/8 to 3-3/ Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 3-1/16" to 4-1/2" Back-up Jaw Assembly Back-up Jaw, 3-1/16" to 4-1/2" Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 4-1/2" to 5-9/16" Back-up Jaw Assembly Back-up Jaw (Solid), 4-1/2" to 5-9/16" A/R 5" to 6-1/16" Back-up Jaw Assembly Back-up Jaw (Solid), 5" to 6-1/16" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 23

26 Kelco K-20, K-25, K-30, Replacement Inserts Replacement Inserts for Kelco K Insert f/k-20, 3/4" (1.050") Insert f/k-20, 1" (1.315") Insert f/k-20, 1-1/4" (1.660") Insert f/k-20, 1-1/2" (1.900") Insert f/k-20, 2-1/16" (2.062") Insert f/k-20, 2-3/8" Replacement Inserts for Kelco K Insert f/k-25, 1" (1.315") Insert f/k-25, 1-1/4" (1.660") Insert f/k-25, 1-1/2" (1.900") Insert f/k-25, 2-1/16" Insert f/k-25, 2-3/8" Insert f/ K-25, 2-7/8" Replacement Inserts for Kelco K N/A Insert f/k-30, 3/4" (1.050") N/A Insert f/k-30, 1" (1.315") N/A Insert f/k-30, 1-1/4" (1.660") N/A Insert f/k-30, 1-1/2" (1.990") Insert f/k-30, 2-1/16" Insert f/k-30, 2-3/8" Insert f/k-30, 2-7/8" Insert f/k-30, 3-1/2" Hillman Kelley Power Tongs Replacement Inserts Replacement Inserts for Hillman Kelley 500-C Power Tongs A Jaw/Die Combination F/Hillman Kelley, 3/4" to 1" A Jaw/Die Combination F/Hillman Kelley, 1-1/4" A Jaw/Die Combination F/Hillman Kelley, 1-1/2" to 2-1/16" A Jaw/Die Combination F/Hillman Kelley, 2-3/8" A Jaw/Die Combination F/Hillman Kelley, 2-7/8" Jaw/Die Combination F/Hillman Kelley, 3-1/2" Replacement Inserts for Hillman Kelley Wrap Around Power Tongs R N/A HKWA Insert, 3-1/2" Reg Tooth R N/A HKWA Insert, 2-7/8" Reg Tooth R N/A HKWA Insert, 2-3/8" Reg Tooth R N/A HKWA Insert, 2-1/16" Reg Tooth Standard Hillman Kelley Die, 3/8" x 5/8 x 4-1/2" 0.3 A/R A/R N/A Backup Die, 3/8" x 5/8" x 1-15/16" 0.2 A/R A/R Page 24 sales@rigtool.com (877) fax (817) Cat. 2012

1 Slip Inserts, Tong Dies, and Jaws Index Page Slip & Bowl Inserts Page 3-1/2" TS 100 Slip /2" Ortco Slip /2" Ortco Slip Rotary Slip Inserts Baash Ross DU Varco SDS, SDML, SDXL Woolley type B: 4-1/2" & 5-1/2" Woolley type XL: 4-1/2 & Slip Type Elevator Inserts BJ LYT Slip Elevator BJ MYT Slip Elevator BJ YT Slip Elevator BJ HYT Slip Elevator BJ YC Slip Elevator Elevator/Spider Inserts BJ Elevator/Spiders Varco, Blohm + Voss Elevator/Spider Drill Collar Slip Inserts Baash Ross C & C Varco DCS-S, DCS-R, DCS-L Woolley Type A Casing Slip Inserts Baash Ross UC-3 & UC Varco CMS-XL Woolley Type C Tubing Spider Inserts BJ 50 & 100 Ton Cavins Model B Cavins Model C & Top Load Tubing Spider Inserts (Cont.) Page Cavins Model F Hydra Rig Model 150 & Guiberson T-40 & T Oil Country Type G Mission Shallow Well Slips Mission Deep Well Slips Manual Tong Dies Reducing Tong Dies Tong Die Drivers BJ Type Tong Dies Blohm + Voss Tong Dies BVM Tong Dies Web Wilson Tong Dies Woolley Manual Tong Dies Power Tongs - Jaws & Inserts BJ Jaws, Bushings & Inserts Foster & 58-93R Drag Ring Ass"y Foster & 58-93R Jaws & Inserts Cesco/Gill Tong Jaws & Inserts & Drag Ring Ass"y & Jaws & Inserts Back-up Tool Jaws & Inserts Back-up Tool Jaws & Inserts Misc. Inserts & Tong Dies Kelco K-20, K-25, K Hillman Kelley 500-C Jaw/Die Combination.. 24 Hillman Kelley Wrap Around Tongs Eckel Power Tong Dies Sucker Rod Elevator Plates Kelly Spinner Model 77 Jaws sales@rigtool.com (877) fax (817)

6 BJ-20, 40, 75 and 150 ton Slip Elevators* Cat. # Ref. # Description Wt. Ea. Qty. Ea. Box LYT Replacement Inserts Reducing Insert, 2-1/16" x 1" (1.315") Reducing Insert, 2-1/16" x 1-1/4" (1.660") Reducing Insert, 2-1/16" x 1-1/2" (1.900") Basic Insert, 2-1/16" x 2-1/16" *Interchangeable with: M&W Oil Tools, Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. MYT Replacement Inserts Reducing Insert, 2-7/8" x 1" (1.315") Reducing Insert, 2-7/8" x 1-1/4" (1.660") Reducing Insert, 2-7/8" x 1-1/2" (1.900") Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. YT Replacement Inserts Reducing Insert, 2-7/8" x 1" (1.315") Reducing Insert, 2-7/8" x 1-1/4" (1.660") Reducing Insert, 2-7/8" x 1-1/2" (1.900") Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) Reducing Insert, 3-1/2" x 2-7/8" Basic Insert, 3-1/2" x 3-1/2" *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. HYT Replacement Inserts Reducing Insert, 2-7/8" x 2-1/16" DM Reducing Insert, 2-7/8" x 2-3/8" (Directional-Machined) DM Basic Insert, 2-7/8" x 2-7/8" (Directional-Machined) Reducing Insert, 3-1/2" x 2-7/8" Basic Insert, 3-1/2" x 3-1/2" *Interchangeable with: M&W Oil Tools, Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 4 sales@rigtool.com (877) fax (817) Cat. 2012

7 Cat. # Description Ref. # BJ-Elevator/Spider Replacement Inserts* Slip Size Size (OD) Number of Inserts Required Cat sales@rigtool.com (877) fax (817) Page 5 YC 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Basic Insert /2" 3-1/2" Basic Insert " 4" Basic Insert /2" 4-1/2" Basic Insert /2" 5-1/2" Basic Insert " 7" Basic Insert /8" 7-5/8" Basic Insert /8" 8-5/8" Basic Insert /8" 8-7/8" Basic Insert /8" 9-5/8" Basic Insert /4" 10-3/4" Basic Insert /8" 10-7/8" Basic Insert /4" 11-3/4" Basic Insert /2" 12-1/2" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Cat. # Description Ref. # BASIC INSERTS - YC THROUGH 1,000 TONS REDUCING INSERTS - YC THROUGH 1,000 TONS* Slip Size Size (OD) YC Number of Inserts Required 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Reducing Insert /2" 2-3/8" Reducing Insert /2" 2-7/8" Reducing Insert /2" 3-1/2" Reducing Insert /2" 4" Reducing Insert /2" 4-1/2" Reducing Insert /2" 5" Reducing Insert " 5-3/4" Reducing Insert " 6" Reducing Insert " 6-5/8" Reducing Insert /8" 6-5/8" Reducing Insert /8" 7" Reducing Insert /8" 7-5/8" Reducing Insert /8" 7-3/4" Reducing Insert /8 7-7/ Reducing Insert /8" 8" Reducing Insert /8" 8-1/8" Reducing Insert /8" 8-1/4" Reducing Insert /8" 8-3/8" Reducing Insert /8" 8-1/2" Reducing Insert /8" 8-5/8" Reducing Insert /8" 8-3/4" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc.

8 BJ Elevator/Spider Replacement Inserts* REDUCING INSERTS - YC THROUGH 1,000 TONS Cat. # Description Ref. # Slip Size Size (OD) YC Number of Inserts Required 7-5/8" 175 Ton 13-3/8" 350 Ton 13-5/8" 500 ton 10-3/4" 500 Ton Ton Wt. Ea Reducing Insert /8" 8-3/4" Reducing Insert /8" 8-5/8" Reducing Insert /4" 9-5/8" Reducing Insert /4" 9-7/8" Reducing Insert /8" 9-5/8" Reducing Insert /8" 9-3/4" Reducing Insert /8" 9-7/8" Reducing Insert /8" 10" Reducing Insert /8" 10-1/8" Reducing Insert /8" 10-1/4" Reducing Insert /8" 10-3/8" Reducing Insert /8" 10-1/2" Reducing Insert /8" 10-5/8" Reducing Insert /8" 10-3/4" Reducing Insert /4" 10-3/4" Reducing Insert /4" 10-7/8" Reducing Insert /2" 11-1/4" Reducing Insert /2" 11-3/8" Reducing Insert /2" 11-1/2" Reducing Insert /2" 11-5/8" Reducing Insert /2" 11-3/4" Reducing Insert /2" 11-7/8" Reducing Insert /2" 12" Reducing Insert /2" 12-1/8" Reducing Insert /2" 12-1/4" Reducing Insert /2" 12-3/8" Reducing Insert /4" 11-3/4" Reducing Insert /4" 11-7/8" Reducing Insert /8" 12-1/2" Reducing Insert /8" 12-3/4" Undersize Insert /8" 13-1/2" Reducing Insert " 12-3/4" Reducing Insert " 12-7/8" Reducing Insert " 13" Reducing Insert " 13-1/8" Reducing Insert " 13-1/4" Reducing Insert " 13-3/8" Reducing Insert " 13-1/2" Reducing Insert " 13-5/8" Reducing Insert " 13-3/4" Reducing Insert " 13-7/8" Reducing Insert " 18-5/8" *Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 6 sales@rigtool.com (877) fax (817) Cat. 2012

12 BJ-50 and 100 Tubing Spiders* BJ 50 Ton Spider Replacement Inserts Reducing Insert for BJ 50-Ton, 2-7/8" x 1" (1.315") Reducing Insert for BJ 50-Ton, 2-7/8" x 1-1/4" (1.660") Reducing Insert for BJ 50-Ton, 2-7/8" x 1-1/2" (1.900") Reducing Insert for BJ 50-Ton, 2-7/8 x 2-1/ DM Reducing Insert for BJ 50-Ton, 2-7/8 x 2-3/ DM Basic Insert for BJ 50-Ton, 2-7/8 x 2-7/ Reducing Insert for BJ 50-Ton, 3-1/2 x 2-7/ DM Basic Insert for BJ 50-Ton, 3-1/2 x 3-1/ BJ 100 Ton Spider Replacement Inserts Reducing Insert for BJ 100-Ton, 2-7/8" x 1" (1.315") Reducing Insert for BJ 100-Ton, 2-7/8" x 1-1/4" (1.660") Reducing Insert for BJ 100-Ton, 2-7/8" x 1-1/2" (1.900") Reducing Insert for BJ 100-Ton, 2-7/8 x 2-1/ DM Reducing Insert for BJ 100-Ton, 2-7/8 x 2-3/ DM Basic Insert for BJ 100-Ton, 2-7/8 x 2-7/ Reducing Insert for BJ 100-Ton, 3-1/2 x 2-7/ DM Basic Insert for BJ 100-Ton, 3-1/2 x 3-1/ * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Cavins B Tubing Spiders** Chevron Inserts TB /8 Chevron Insert, 2-3/ TB /8 Chevron Insert, 2-7/ TB /2 Chevron Insert, 3-1/ Circular Button Inserts TB /8 Circular Button Insert, 2-3/ TB /8 Circular Button Insert, 2-7/ TB /2 Circular Button Insert, 3-1/ Replacement Inserts TB Reducing Insert for Cavins B, 2-7/8" x 1" (1.315") TB /4 Reducing Insert for Cavins B, 2-7/8" x 1-1/4" (1.660") TB /2 Reducing Insert for Cavins B, 2-7/8" x 1-1/2" (1.900") TB /16 Reducing Insert for Cavins B, 2-7/8" x 2-1/16" TB /8 Reducing Insert for Cavins B, 2-7/8" x 2-3/8" TB /8 Basic Insert for Cavins B, 2-7/8" x 2-7/8" ** Interchangeable with: Forum Oil Tools (AOT), Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Page 10 sales@rigtool.com (877) fax (817) Cat. 2012

17 Reducing Tong Die - Reference Chart* 1-1/4" Die Slot Cat. # Ref. # Size Description Wt N/A 9/16" x 1-1/4" x 3-7/8" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5" 1/8 Reduction Tong Die N/A 9/16" x 1-1/4" x 5-7/8" 1/8 Reduction Tong Die N/A 5/8" x 1-1/4" x 3-7/8" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5" 1/4 Reduction Tong Die N/A 5/8" x 1-1/4" x 5-7/8" 1/4 Reduction Tong Die N/A 11/16 x 1-1/4 x 3-7/8 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5 3/8 Reduction Tong Die N/A 11/16 x 1-1/4 x 5-7/8 3/8 Reduction Tong Die N/A 3/4" x 1-1/4" x 3-7/8" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5" 1/2 Reduction Tong Die N/A 3/4" x 1-1/4" x 5-7/8" 1/2 Reduction Tong Die N/A 13/16 x 1-1/4 x 3-7/8 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 5 5/8 Reduction Tong Die N/A 13/16 x 1-1/4 x 5-7/8 5/8 Reduction Tong Die N/A 7/8 x 1-1/4 x 3-7/8 3/4 Reduction Tong Die N/A 7/8 x 1-1/4 x 5 3/4 Reduction Tong Die N/A 7/8 1-1/4 x 5-7/8 3/4 Reduction Tong Die N/A 15/16 x 1-1/4 x 3-7/8 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5 7/8 Reduction Tong Die N/A 15/16 x 1-1/4 5-7/8 7/8 Reduction Tong Die N/A 1" x 1-1/4" x 3-7/8" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5" 1 Reduction Tong Die N/A 1" x 1-1/4" x 5-7/8" 1 Reduction Tong Die 1.15 * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. Tong Die Drivers Cat. # Ref. # Description Wt. Ea. Qty. Req. Box Tong Die Drivers N/A Tong Die Driver, A/R N/A Tong Die Driver, 1-1/ A/R Cat sales@rigtool.com (877) fax (817) Page 15

18 Tong Die Cross - Reference Chart* 5/8" Die Slot Cat. # Ref. # Size Application Wt /8" x 5/8" x 1-15/16" BJ Type S & WS Tongs Eckel 4-1/2" Tong 2-1/16" Jaw /8" x 5/8" x 4-1/2" Hillman Kelley Standard: All Sizes Drill Pipe & Casing Power Tongs S /8" x 1" x 1-7/16" (w/slot) BJ Powermatic & Hydratorc Tong w/ 1" Die Slots (4-1/8" x 4-1/2") S 6209S 3/8" x 1" x 1-15/16" (w/slot) BJ Type MS & MS Backup /8" x 1" x 2-1/2" Eckel 4-1/2" Tong, 4" & 4-1/2" Jaw.25 1" Die Slot 3/8" x 1" x 2-5/8" S BJ CTS 4-1/2", 5" & 5-1/2" Tongs.15 (w/slot) /8" x 1" x 3-7/8" BJ Powermatic Tong, Farr Power Tong, Weatherford 5-1/2" & 7-5/8" Tong /8" x 1" x 4-1/4" Web Wilson Type C, D, /8" x 1" x 4-1/2" Hillman Kelley Backup Die /8" x 1" x 5-3/4" Web Wilson Type B & Old Style AAX BJ B+V BV BD* /2" x 1-1/4" x 3-7/8" BJ Drill Pipe Power Tongs Eckel 5-1/2" to 30" Power Tongs Farr Power Tongs /4" Die Slot BD* /2" x 1-1/4" x 5" BJ Type SDD, C, F, & LF Tong BJ Power Casing Tongs (4-1/2" to 13-3/8") Woolley Type Super C, SLF & SDD Tong Eckel Model 850 Web Wilson B+V BV-25, BV-35, BV BD* /2" x 1-1/4" x 5-7/8" BJ Type B & DB Tongs Web Wilson AAX, H & AAX-ST-160 Woolley Types Super A Super B Rotary & Super B Casing Tongs B+V, BV-55, BV-57, BV-65, BV * Interchangeable with: Custom Die(CDI), National Oilwell Varco (NOV), Ortco Inc. *Blue Diamond Tong Dies Available for 1-1/4 Die Slots Page 16 sales@rigtool.com (877) fax (817) Cat. 2012

19 BJ 4-1/2 R, RS, Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (3-1/2" Jaw & Bushing) S Tong Die, 3/8" x 1" x 1-7/16" w/slot (4-1/2" Jaw & Bushing) * Interchangeable with: BJ, Carter Tool, Oil Country, 4-1/2 Open Face Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 17

20 BJ - 5-1/2 CTS Tubing Tongs Replacement - Jaws, Bushings, and Tong Dies* Cat.# Ref. # Description Wt. Ea. Qty. Req. Box Replacement Jaws Jaw Assembly, 2-3/8" A/R Jaw Assembly, 2-7/8" A/R Jaw Assembly, 3-1/2" A/R Jaw Assembly, 4-1/2" A/R Jaw Assembly, 5-1/ A/R Replacement Bushings Bushing Assembly, 2-3/8" A/R Bushing Assembly, 2-7/8" A/R Bushing Assembly, 3-1/2" A/R Bushing Assembly, 4-1/2" A/R Bushing Assembly, 5-1/ A/R Replacement Tong Dies N/A Power Tong Die, 2-3/8" x 1" (1.315 ) N/A Power Tong Die, 2-3/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-3/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-3/8" x 2-1/16" Power Tong Die, 2-3/8" x 2-3/8" N/A Power Tong Die, 2-7/8" x 1 (1.315 ) N/A Power Tong Die, 2-7/8" x 1-1/4" (1.660 ) N/A Power Tong Die, 2-7/8" x 1-1/2" (1.900 ) N/A Power Tong Die, 2-7/8" x 2-1/16" N/A Power Tong Die, 2-7/8" x 2-3/8" Power Tong Die, 2-7/8" x 2-7/8" Tong Die, 3/8" x 1" x 3-7/8" (4-1/2" & 5-1/2 Bushing Only) S Tong Die, 3/8" x 1" x 2-5/8 w/slot (4-1/2" & 5-1/2 Jaw Only) * Interchangeable with: BJ, Carter Tool, Oil Country, 5-1/2 Open Face Tubing Tongs Page 18 sales@rigtool.com (877) fax (817) Cat. 2012

21 58-93R Foster Tubing Tongs Drag Ring Assemblies Cat. # Ref. # Description Wt. Ea. Qty. Req. Box 1-5/16" to 3-1/2" (5" Bore) Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 1" Long A/R Drag Spring, 7/8" Long A/R Set Screw, 1" x 1" A/R Cover Plate (5" Bore) A/R Guide Bell 1-5/16" to 1-1/2" (1.900") A/R 3-1/2" to 6-1/16" (6-1/4" Bore) Drag Ring Assembly (6-1/4" Bore, 1" Pins) A/R Drag Ring Pin (1" x 6-1/4") A/R Drag Plug, 7/8" Long (Overall = 3/4 ) N/A 5 A/R Drag Spring, 7/8" Long A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate (6-1/4" Bore) N/A 1 A/R Guide Bell (6-1/4" Bore) N/A 1 A/R 4" to 5-1/2" (7-1/4" Bore) Drag Ring Assembly (7-1/4 Bore, 3/4" Pin) A/R Drag Ring Pin (3/4" x 6-1/4") N/A 5 A/R Drag Plug, 5/8" Long A/R Drag Spring, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (7-1/4" Bore) N/A 1 A/R Guide Bell (7-1/4" Bore) N/A 1 A/R 6-5/8" to 7" (7-7/8" Bore) Drag Ring Assembly (7-7/8" Bore: 5/8" Pin) A/R Drag Ring Pin (5/8 x 6 ) A/R Drag Plug, 1/2" Long A/R Drag Spring A/R Set Screw, 1/2" x 1" N/A 5 A/R Cover Plate, 5/8" Pins: 10 (7-7/8" Bore) N/A 1 A/R Guide Bell (7-7/8" Bore) N/A 1 A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 19

22 58-93R Foster Tubing Tongs Single Action Tubing Jaws & Tong Dies* 1-5/16" to 1-1/2" (1.900") Jaw Assembly Jaw, 1-5/16" to 1-1/2" (1.900") A/R Tong Die, 1", 1-1/4" & 1-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 1-7/8" to 2-3/8" Jaw Assembly Jaw, 1-7/8" to 2-3/8" A/R Tong Die, 2-1/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die, 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-7/8" to 3-1/2" Jaw Assembly Jaw, 2-7/8" to 3-1/2" A/R Tong Die, 2-3/8" to 3-1/2" P P Pyramid Tong Die 2-3/8" to 3-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-3/4" Jaw Assembly Jaw, 3-1/2" to 4-3/4" A/R Insert, 3-1/2" to 4-1/2" Insert, 4" to 4-3/4" Insert Screw, 3/8" x 2-3/4" w/nut A/R 5" to 6-1/16" Jaw Assembly Jaw (Solid) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tubing Tongs Single Action Casing Jaws & Tong Dies* 4" to 4-1/2" Jaw Assembly Jaw, 4" to 4-1/2" A/R Insert, 4" to 4-1/2" N/A Insert, 5-1/2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 6-5/8" to 7" Jaw Assembly Jaw (Solid), 6-5/8" N/A Jaw (Solid), 7" * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 20 sales@rigtool.com (877) fax (817) Cat. 2012

23 58-93R Foster Tongs Double Action Tubing Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw, 1" to 1-5/16" N/A Insert, 1" to 1-1/16" N/A Insert Screw, 3/8" x 2-3/4" w/nut A/R 2" Jaw Assembly Jaw, 2" Insert, 2" Insert Screw, 3/8" x 2-3/4" w/nut A/R 2-3/8" to 3-11/16" Jaw Assembly Jaw to Double Acting, 2-3/8" to 3-11/16" Insert-Double Acting, 2-3/8" to 3-1/16" Insert-Double Acting, 2-7/8" to 3-1/2" Insert-Double Acting, 3-1/2" Insert-Double Acting, 3-11/16" Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs 58-93R Foster Tongs - Cesco/Gill Style Single Action Tubing Jaws & Tong Dies* 1-1" to 2-7/8" Jaw Assembly Use Foster Type Tong Jaws 2-7/8" to 3-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-4 Insert, 2-7/8" to 3-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 3-1/2" to 4-1/2" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505 Insert, 3-1/2" to 4-1/2" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R 4" to 5" Jaw Assembly J505-2 Jaw, 2-7/8" to 5" (w/1" pin Hole) A/R N505-1 Insert, 4" to 5" A/R N507 Insert Screw, 3/8" x 2-3/4" w/nut A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 21

24 58-93R Foster Tongs - Cesco/Gill Style Single Action Casing Jaws & Tong Dies* 4" to 5-1/2" Jaw Assembly J506 Jaw (4" to 5-1/2") w/ 3/4" pin hole A/R N505-2 Insert Casing, 4" to 4-1/2" A/R N505-3 Insert Casing, 5" to 5-1/2" A/R N507-1 Insert Screws, 5/16" w/nuts A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Drag Ring Assembies* 1" to 3-1/2" Tubing Drag Ring Assembly (5" Bore, 1" Pin) A/R Drag Ring Pin, 5/8 x A/R Drag Spring, 1/2" Long A/R Drag Plug, 1/2" Long A/R Set Screw, 1/2" x 1" A/R Cover Plate (5" bore) A/R Guide Bell (4-3/4 Bore) A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Foster 74 & Tubing Tong Single Action Jaws & Tong Dies* 1" to 1-5/16" Jaw Assembly Jaw (Solid), 1" to 1-5/16" A/R 1-5/8" to 2-1/16" Jaw Assembly Jaw, 1-5/8" to 2-1/16" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 2-3/8" to 2-7/8" Jaw Assembly Jaw, 2-3/8" to 2-7/8" Tong Dies, 2-3/8" to 2-7/8" Insert Screw A/R 3-1/2" (only) Jaw Assembly Jaw (Solid), 3-1/2" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Page 22 sales@rigtool.com (877) fax (817) Cat. 2012

25 Foster 147 Back-up - Jaws & Tong Dies* 1-5/16" to 2-1/16" Back-up Jaw Assembly Back-Up Jaw, 1-5/16" to 2-1/16" Tong Die, 1" to 1-1/2" Insert Screw, 3/8" x 1" A/R 2-3/8" to 3-3/4" Back-up Jaw Assembly Back-Up Jaw, 2-3/8 to 3-3/ Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 3-1/16" to 4-1/2" Back-up Jaw Assembly Back-up Jaw, 3-1/16" to 4-1/2" Tong Die, 2-3/8" to 2-7/8" P P Pyramid Tong Die, 2-3/8" to 2-7/8" Insert Screw, 3/8" x 1" A/R 4-1/2" to 5-9/16" Back-up Jaw Assembly Back-up Jaw (Solid), 4-1/2" to 5-9/16" A/R 5" to 6-1/16" Back-up Jaw Assembly Back-up Jaw (Solid), 5" to 6-1/16" A/R * Interchangeable with: Carter Tool, Gill Services, Oil Country, Tillery & Parks, Closed Head Tubing Tongs Cat sales@rigtool.com (877) fax (817) Page 23

26 Kelco K-20, K-25, K-30, Replacement Inserts Replacement Inserts for Kelco K Insert f/k-20, 3/4" (1.050") Insert f/k-20, 1" (1.315") Insert f/k-20, 1-1/4" (1.660") Insert f/k-20, 1-1/2" (1.900") Insert f/k-20, 2-1/16" (2.062") Insert f/k-20, 2-3/8" Replacement Inserts for Kelco K Insert f/k-25, 1" (1.315") Insert f/k-25, 1-1/4" (1.660") Insert f/k-25, 1-1/2" (1.900") Insert f/k-25, 2-1/16" Insert f/k-25, 2-3/8" Insert f/ K-25, 2-7/8" Replacement Inserts for Kelco K N/A Insert f/k-30, 3/4" (1.050") N/A Insert f/k-30, 1" (1.315") N/A Insert f/k-30, 1-1/4" (1.660") N/A Insert f/k-30, 1-1/2" (1.990") Insert f/k-30, 2-1/16" Insert f/k-30, 2-3/8" Insert f/k-30, 2-7/8" Insert f/k-30, 3-1/2" Hillman Kelley Power Tongs Replacement Inserts Replacement Inserts for Hillman Kelley 500-C Power Tongs A Jaw/Die Combination F/Hillman Kelley, 3/4" to 1" A Jaw/Die Combination F/Hillman Kelley, 1-1/4" A Jaw/Die Combination F/Hillman Kelley, 1-1/2" to 2-1/16" A Jaw/Die Combination F/Hillman Kelley, 2-3/8" A Jaw/Die Combination F/Hillman Kelley, 2-7/8" Jaw/Die Combination F/Hillman Kelley, 3-1/2" Replacement Inserts for Hillman Kelley Wrap Around Power Tongs R N/A HKWA Insert, 3-1/2" Reg Tooth R N/A HKWA Insert, 2-7/8" Reg Tooth R N/A HKWA Insert, 2-3/8" Reg Tooth R N/A HKWA Insert, 2-1/16" Reg Tooth Standard Hillman Kelley Die, 3/8" x 5/8 x 4-1/2" 0.3 A/R A/R N/A Backup Die, 3/8" x 5/8" x 1-15/16" 0.2 A/R A/R Page 24 sales@rigtool.com (877) fax (817) Cat. 2012

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

1Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dong Fang Road, Shanghai, 200127 China

2Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092 China

In consideration of the sex-specific effect of maternal sleep on the offspring weight outcomes in animal studies, the interactive effect of sex and the maternal sleep parameters on the offspring’s adiposity indicators was also performed. Firstly, we added an interaction term (maternal sleep * sex) in the multivariable linear regression models to assess the statistical interactive effect. Then, we conducted the sex-specific linear regression model to evaluate the biological interaction effect between maternal sleep and offspring sex [42]. Furthermore, the sensitivity analysis for the associations between the maternal sleep parameters and the offspring’s adiposity indicators was conducted by further extracting the subjects whose nighttime sleep duration was within − 4SD ~  + 4SD from the whole sample [28]. We further performed a multiple imputation using chained equations (MICE) with 100 imputed datasets to estimate missing values [43] and compared the results before and after the data imputation.

We did not find significant associations between the maternal nighttime sleep duration and sleep quality during the late pregnancy with the 2-year-old offspring’s adiposity indicators. We also did not identify any significant DMPs associated with the maternal nighttime sleep duration and sleep quality. However, the DNA methylation alterations resulting from insufficient sleep duration and poor sleep quality were reported in prior adult and adolescent researches. For example, even one-night acute sleep loss in adults resulted in 148 significant lipid metabolism-related differentially methylated regions in the subcutaneous adipose tissue [61]. Additionally, both objectively measured shorter sleep duration and higher sleep fragmentation in adolescents were associated with the DNA methylation of metabolism-related genes in the blood [62]. As specific to the intrauterine impact of maternal sleep, only animal studies were conducted and showed that the sleep fragmentation during the late gestation induced the offspring’s AdipoQ methylation modification along with the higher weight and other metabolic syndrome-like phenotypes [16, 63]. Animal research indeed plays an important role in providing insights into this research field [64]; however, many researchers realized that the conclusions drawn from animal studies cannot be simply transferred to human studies, due to the wide genetic heterogeneity and variety of metabolic pathways [65]. Therefore, more human studies are needed for substantiating the current findings.

Several potential limitations should be taken into consideration when interpreting the results of this study. Firstly, the majority of the mothers were well educated in our study, and therefore, the results might not be generalizable to the national population. Secondly, the sleep parameters were self-reported which may have brought the reporting bias. Future researches are needed to estimate the sleep parameters using objective methods, such as actiwatch. Thirdly, although we assessed BMI and SF indicators, direct measurements of fat mass and body fat distribution as well as blood biomarkers were not measured. Meanwhile, the potential measurement errors could also influence our findings. Fourthly, although the small sample for the EWAS may have been limited to finding more certain associations, our results showed that the later maternal sleep midpoint significantly predicted the increased offspring’s adiposity indicator, and additional larger cohort study was needed to confirm our findings. In addition, the DNA methylation was measured only in the cord blood, not fat-specific tissues, which may have attenuated the effect of maternal sleep during the late pregnancy on the DNA methylation in the offspring. Fifthly, in the current study, we only studied the offspring obesity-related outcomes at 2 years old and longer-term follow-up to evaluate whether the association persists or disappears was also needed. Moreover, we only included the normal pregnancy women, and it is also necessary to pay attention to those with sleep disorder in future. Finally, given the observational nature of our study, we could not exclude the influences by the residual and unmeasured or unknown confounding factors; additional larger and external cohort studies considering more relevant confounding factors were needed to confirm our findings.

11. Fatima Y, Doi SAR, Mamun AA. Sleep quality and obesity in young subjects: a meta-analysis. Obes Rev: Off J Int Assoc Study Obes.2016;17(11):1154–1166. [PubMed]

35. Facco FL, Grobman WA, Reid KJ, et al. Objectively measured short sleep duration and later sleep midpoint in pregnancy are associated with a higher risk of gestational diabetes. Am J Obstet Gynecol.2017;217(4):447-e1. PubMed]

47. Carter PJ, Taylor BJ, Williams SM, et al. Longitudinal analysis of sleep in relation to BMI and body fat in children: the FLAME study. BMJ (Clin Res Ed)2011;342:d2712. PubMed]

Carter SG, Berger MS, Carberry JC, Bilston LE, Butler JE, Tong BK, Martins RT, Fisher LP, McKenzie DK, Grunstein RR, Eckert DJ. Zopiclone increases the arousal threshold without impairing genioglossus activity in obstructive sleep apnea. SLEEP 2016;39(4):757–766.

Nasal decongestant was applied to both nostrils. The less obstructed nostril was anesthetized with lignocaine and an epiglottic pressure catheter was advanced 1 to 2 cm intranasally below the base of the tongue.

Prior to sleep, participants were also asked to perform maneuvers including swallows and tongue protrusions against the back of their top teeth under verbal encouragement in order to determine maximal genioglossus EMG.

Genioglossus EMG activity was rectified, moving-time averaged (100 msec), and expressed as a percentage of maximal EMG during a tongue protrusion or swallow during wakefulness as described previously.Figure 2). Genioglossus EMG responsiveness to negative epiglottic pressure was quantified as the average slope between peak EMG versus nadir epiglottic pressure in each patient on the first versus last respiratory effort immediately prior to arousal for each respiratory event used for arousal threshold determination during N2 and N3 nonrapid eye movement (NREM) sleepFigure 2).

Two participants (one male) with mild OSA yielded insufficient arousal threshold and genioglossus muscle data during sleep for analysis (< 6 artefact-free events) in at least one of the study arms. Of the remaining 10 subjects, minute ventilation and genioglossus EMG activity during wakefulness prior to receiving the tablet were not different between placebo and zopi-clone (Table 2). The respiratory arousal threshold increased by 19 ± 8% during the zopiclone arm compared to placebo (Figure 3, P = 0.02). The respiratory arousal threshold was not different during the first compared to the second half of the night during the placebo (−25 ± 5 versus −28 ± 5, P = 0.14) or zopiclone nights (−32 ± 6 versus −32 ± 5, P = 0.86) but was higher during zopiclone versus placebo for both the first half (P = 0.01) and the second half of the night (P = 0.04).

The authors thank Professors Simon Gandevia and Robert Herbert for coordinating the randomization process for the study. Author Contributions: Dr. Eckert was responsible for the study conception and experimental design. Ms. Carter, Mr. Berger, and Dr. Eckert contributed to data collection, analysis, and interpretation. Mr. Tong and Dr. Carberry contributed to data collection and analysis. Dr. Martins contributed to data collection. Drs. Butler and Grunstein contributed to data interpretation. Ms. Fisher contributed to data collection, analysis, and participant recruitment. Dr. McKenzie contributed to participant recruitment and data interpretation. Dr. Bilston oversaw design of the MRI component of the study and contributed to data analysis and interpretation. Dr. Eckert, Ms. Carter, and Mr. Berger wrote the draft version of the manuscript. All authors contributed to the final version.

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