Countersink Drill Bit, High Speed Steel, 3/8-In. Shrink Film Window Kit Minimum Efficiency Reporting Value (MERV)

Minimum Efficiency Reporting Value (MERV) of 11

Pocket Knife Features Partially Serrated Blade

upgraded build delivers 5x life & 2x speed over standard masonry bits

easy to switch gloves when you need a fresh pair

The overall length is 5

Countersink Drill Bit, High Speed Steel, 3/8-In. Shrink Film Window Kit Minimum Efficiency Reporting Value (MERV)3 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.