It is best to acquire the proper length bit; however, in some situations the only way is to extend the bit. Make sure that the bit is properly fastened to the extension with set screws.
* For use with: HS, FB, A, B, C, J, NHS.
For use with: AUG, CD, MBH, LBH, JD.
| MODEL | DIMENSION |
| JD 242* | 24″ long |
| JD 482* | 51″ long |
| JD 722* | 72″ long |
| J 248 | 24″ long |
| J 488 | 51″ long |
| J 728 | 72″ long |