Irwin Unibit 1/8 In. - 1/2 In. #1 Step Drill Bit, 13 Steps

Single concave flute design creates perfectly round holes in thin materials including steel, brass, copper, and aluminum. Constructed of industrial grade, high speed molybdenum steel. SpeedPoint tip for fast starts.

• Single-flute cutting edge for greater control through steps
• 3 flatted shank prevents slipping in drill chuck
• Also available with titanium nitride 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