Service Tools
Bumper Sub
The Bumper Sub is a heavy duty travel joint designed to transmit high torque. A hex mandrel is incorporated into the design, providing a large contact surface that transmits torque through the tool. Bonded seals are used to provide a seal across the full stroke of the Bumper Sub.
Special Features
- Heavy duty design
- Large contact surface to transmit high torque thru the tool
- Bonded seals provide seal on full stroke
- Extended lengths available

Product Specifications
| Size (inches) | Tool OD (inches) | Tool ID (inches) | Thread Connections (Box Up / Pin Down) | Part Number | Technical Data |
|---|---|---|---|---|---|
| 3-1/2 | 4.750 | 2.50 | 3-1/2 IF TOOL JOINT | 53335 | |
| 4-1/2 | 6.250 | 3.75 | 4-1/2 IF TOOL JOINT | 53345 | |
| 4-1/2 | 6.500 | 3.75 | 4-1/2 IF TOOL JOINT | 53346 | |
| 4-1/2 | 7.250 | 3.25 | NC 50 TOOL JOINT | 53347-48 | |
| 6-5/8 | 8.500 | 4.00 | 6-5/8 FULL HOLE TOOL JOINT | 53365-48 |
All items include standard Nitrile trim. Other sizes and connections available upon request.