Irwin Unibit #4, 3/16" - 7/8" 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