HSS Step Drill Set - 3 Pcs

Bahco

Includes 3 pieces 4 mm to 12 mm in 1 mm increments 4 mm to 22 mm in 2 mm increments 5 mm to 35 mm in 13 mm increments Step drill set 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 Shank size 1/4" (6.35 mm) and 3/8" (10 mm) and 1/2" (12.7mm) For making holes in thin metal sheets Last up to five times longer than ordinary step drills Titanium-nitride (TIN) coating with a surface hardness Self-lubricates while running dry