Irwin Unibit 10235 Unibit #5 HSS 10-Step Drill Bit (1/4" - 1-3/8")

This high speed steel fractional self-starting drill bit has a single-flute cutting edge for greater control through steps. The 3 flatted shank prevents slipping in drill chuck.

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This high speed steel fractional self-starting drill bit has a single-flute cutting edge for greater control through steps. The 3 flatted shank prevents slipping in drill chuck.