Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade Full-length heat treated bit guards

Full-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occurs

Measures 999’ 11" without resetting

or create an interesting detail on built-up molding

Telescopes to 35"

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

Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade Full-length heat treated bit guards5 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.