Irwin Metal Countersink 1/2" X 15/32" X 1-21/32" - (IW12411)

Precision ground 82 degree tip for countersinking most machinable metals, wood or plastic. Made from industrial grade high speed steel for increased durability. Includes a black oxide finish for added corrosion resistance. Five flute design reduces vibration for smoother drilling and extended life. 1/4" round shank fits all handheld and stationary drills.