Irwin #3 9-Hole Sizes (1/4 In.-3/4 In.) 1/16 In. Increments

The IRWIN Unibit No 3 Cobalt Alloy Steel Step Drill Bit 9 Hole Sizes lets you drill through tough materials like stainless steel easily and quickly. Its SpeedPoint™ tip ensures faster starts with each use. Its M35 Cobalt Alloy Steel steel construction gives the Irwin Unibit No 3 bit maximum durability and long-lasting toughness, so it stays sharp and ready-to-use up to six times longer than traditional bits. With its radial-concave flute design, you achieve rounder holes with less vibration and more control. When drilling with the Unibit drill bit, slippage in the chuck is greatly reduced thanks to the bit's three-flatted shank. Even after years of using the bit, quickly identify the hole sizes you need using the permanent laser-etched sizes marked on the side of the bit.