Irwin 10311 Unibit11 7/8-Inch 3/8-Inch Shank Step Drill Bit
• Single-flute cutting edge for greater control through steps • Hex shank prevents slipping in drill chuck • Also available with (TiN) coating for longer life • New SpeedPoint tip penetrates faster than previous Unibits and prevents walking • Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates