Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade include exclusive features that deliver

include exclusive features that deliver unmatched 50x longer life in both wood & metal cutting applications

or create an interesting detail on built-up molding

including heavy duty abrasive

rafter tables

straight flutes are ground to provide rapid chip removal for efficient threading

Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade include exclusive features that deliver5 8", 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.