Irwin Hanson 15104 #4T Titanium Nitride Coated Fractional Self-Starting Bit, 3/16" - 7/8"

Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic, and laminates Single-flute cutting edge for greater control through steps 3 flatted shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than previous Unibits and prevents walking