Description
For making holes in thin sheet metals
Titanium-nitride (TIN) coated step drill with a surface hardness that makes the tool last 4 to 5 times longer than ordinary step drill bits
Same surface reduces friction, resulting in a tool that runs cooler and effective, self-lubricates while running dry
Self-centering point
Drills holes in 13 steps from 5 mm to 35 mm
Shank 1/2″ (12.7 mm)



