Irwin 12413 Drill Bit, 3/4 in Dia, 1-13/16 in OAL, Countersink, 5-Flute, 1/4 in Dia Shank, Round Shank

High-speed steel milled and precision ground to 82 deg for countersinking into most machinable materials such as iron, steel, soft metals, plastic or wood. Features: - Precision ground 82 deg tip for countersinking most machinable metals, wood or plastic - Made from industrial-grade high-speed steel for increased durability - Black oxide finish for added corrosion resistance - Five flute design reduces vibration for smoother drilling and extended life - 1/4 in round shank fits all handheld and stationary drills