IRWIN Unibit Fractional Two-Step Drill Bit, 7/8in to 1 1/8in - New SpeedPoint? tip provides 6X faster initial penetration time than before, and eliminates the need for center punching. Single-fluted cutting edge assures true round holes, and allows greater control with less vibration. Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, Plexiglas, wood, and laminates.
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