Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade Telescopes to 35"

Telescopes to 35"

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

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

including heavy duty abrasive

Countersink Drill Bit, Black Oxide, 5/8-In. Diamond Blade Telescopes to 35"5 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.