2-1/4" - 57mm Bi-Metal Holesaw HARD WASHER1.3/8 The level's acrylic block vials

The level's acrylic block vials and multi-ring vials further enhance its precision and reliability

Burn Time (Low) 40 hours

The ergonomic gun body design combined with lighter weight helps to reduce painter fatigue

Reverse polarity and overheat protection provide ultimate reliability

Supercut mount

2-1/4" - 57mm Bi-Metal Holesaw HARD WASHER1.3/8 The level's acrylic block vialsStarrett Holesaws. Constant Pitch up to 40mm Dual Pitch Professional Hole Saws 41mm and over are the latest development in multi use bi metal hole saws. Featuring the smooth cutting action of our constant pitch hole saw, combined with aggressive material penetration and swarf clearance, Dual Pitch Professional will cut equally well on thin and thicker gauge materials. This removes the need to carry a constant and a variable pitch hole saw. Advantages: