High Speed Steel Fractional Self-Starting Unibit 10234 Features: 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 10234 Specifications:Hole Size: 1/8"Number of Holes: 12 steps