Countersink Drill Bit, High Speed Steel, 1/2-In. Safety & Personal Protection each disc balance tested for

each disc balance tested for vibration-free grinding/finishing

Textured anti-slip top and body grip provides ultimate comfort and control during use

double-tempered finish reduces breakage

Single-spur cutting edge scribes the circumference of the hole for a smoother finish

Countersink Drill Bit, High Speed Steel, 1/2-In. Safety & Personal Protection each disc balance tested for1 2", high speed steel, countersink drill bit, tip is milled & precision ground to 82 degrees for countersinking into most machinable materials, engineered with premium high speed steel with black oxide coating for corrosion resistance, features 5 flutes for reduced vibration, 1 4" round shank.