IRWIN Tools Black Oxide Countersink Drill Bit, 5-Piece Set (1877791)
Brand: Irwin Tools


Made from industrial grade High-Speed Steel for increased durability. Black oxide finish adds corrosion resistance.
Five-flute design reduces vibration for smoother drilling and extended bit life.
Precision-ground 82-degree tip drills countersink holes into most machinable metals, as well as wood and plastic.
1/4-inch round shank fits all handheld and stationary drills.