Counter boring for Hall Down tools, or Square bolt nuts.
Features:
- For Counter-boring with the guide bar fitted in the drilled hole.
- Upon changing the guide bar to the drill, counter boring and pre-hole drilling can be done at the same time.
SPECIFICATION
Product Number: 28L-D2170
Size: 21X70
Shank Shape: 13 mm (0.51 in)
Suitable materials: Wood
Material: Guide, Drill:High Carbon Steel, Cutter:High Carbon Steel with T.C.T.
