Irwin 10231 #1 Unibit 1/8" - 1/2"

Irwin 10231 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