Step Drill Bit 1/8–1/2 in TiN-Coated High Speed Steel Unibit

The IRWIN Unibit #1 Step Drill Bit is a high-performance tool designed for precision drilling in thin materials such as stainless steel, copper, brass, and plastic. Featuring a self-starting SpeedPoint tip, this bit ensures fast penetration and eliminates the need for center punching while preventing bit walking. Its single-flute cutting edge provides maximum control and produces perfectly round holes across 13 different sizes ranging from 1/8" to 1/2". Constructed from high-speed steel with a titanium nitride (TiN) coating, it offers superior heat resistance and significantly extended tool life compared to standard bits.

Unibit Step Drill, Self-Starting, 1/8 - 1/2 in Diameter, 13 Steps, 1/8 in Step Depth, 1 Flutes, 1/4 in Shank, Hexagonal Shank, Speed Point, High Speed Steel, Titanium Nitride Coated, Applicable Materials: Stainless Steel, Copper, Brass, Aluminum, Plastic, Laminates