Irwin Drill Bit, Step / Unibit, High Speed Steel w/ TiN Coating

This IRWIN® Unibit® #4T Titanium Fractional Self-Starting Drill Bit is ideal for drilling holes into thin materials, such as stainless-steel, copper, brass, aluminum, plastic and laminates. IRWIN® drill bits use a single-flute cutting edge for greater control through steps. The hex shank on each drill bit helps prevent slipping in the drill chuck, while the Speedpoint tip penetrates faster to minimize walking.