Precision ground 82-degree tip for countersinking most machineable metals, wood or plastic. Made from industrial grade High-Speed Steel for increased durability. Black oxide finish resists corrosion. Five-flute design reduces vibration for smoother drilling and extended life. 1/4-inch round shank fits all handheld and stationary drills.
High Speed Steel Countersinks, 1/2-inch diameter, milled and precision ground to countersink into any machinable material including iron, steel, soft metals, plastics or wood. Irwin tools are made of only the finest materials, manufactured to exacting tolerances.