Description

IRWIN Unibit Step Drill Bit #1 (10231)

• Save time because you don’t need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.
• Patented single-flute cutting edge gives greater control through steps and a true round hole every time.
• Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.
• SpeedPoint tip penetrates faster than previous Unibits and prevents walking. 3-faltted hex shank prevents slipping in drill chuck.
• Drill diameters etched in flute for easy identification.