Countersink Drill Bit, 3/8" Dia, 1-5/8" OAL, 5-Flute, 1/4" Dia Shank, Round Shank, IRWIN 1877715
Precision ground 82 deg tip for countersinking most machinable metals, wood or plastic. High-speed steel with black oxide coating for corrosion resistance. 5-flute design reduces chatter for smoother drilling and extended life.