Unibit Step Drill Bit 1/4–3/4 in TiN-Coated HSS Self-Starting

The IRWIN Unibit #3 Step Drill Bit is a professional-grade tool designed to drill nine different hole sizes from 1/4 inch to 3/4 inch with a single bit. Featuring high-speed steel construction with a Titanium Nitride (TiN) coating, this bit offers superior heat resistance and significantly extended cutting life compared to standard HSS bits. The exclusive single-flute design and SpeedPoint tip ensure fast, self-starting performance without walking, producing perfectly round holes in thin materials like sheet metal, copper, and plastic. Its 3/8-inch hex shank provides a secure grip in drill chucks, preventing slippage during high-torque industrial applications.

Unibit Step Drill, Self-Starting, 1/4 - 3/4 in Diameter, 9 Steps, 1/8 in Step Depth, 1 Flutes, 3/8 in Shank, Hexagonal Shank, Speed Point, High Speed Steel, Titanium Nitride Coated, Applicable Materials: Stainless Steel, Copper, Brass, Aluminum, Plastic, Laminates