Irwin (928) 1877714 Irwin Tools 1877714 Countersink Drill Bit, 1/4-Inch, Black Oxide

Irwin Countersink Bit, 1/4 in Pilot Diameter, 1-17/32 in Overall Length, 5 Flutes, 19/64 in Flute Length, 82 Deg, 1/4 in Shank, Round Shank, High Speed Steel, Black Oxide, Applicable Materials: Machinable Metals, Wood and Plastic, For Metal Drilling Precision-Ground 82 tip for countersinking into 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.