- 1/4" Hex shank socket extension, length 152mm
- Suitable for flat bits and most other hex shank accessories
- Ideal for countersinks, fortsners and drill bits etc
152mm long extension for all of your drilling needs. The shank fits into a standard screwdriver bit holder as well as directly into the chuck of a drill. The extension can be locked in place with two grub screws. When used with Bosch SELFCUT flat bits, the combined length of bit and extension is approximately 260mm.