For use with most 21 Deg (degree) plastic strip framing nailers including Bostitch
the Cobalt bits with RED HELIX provide Rapid Chip Removal limiting heat buildup to Stay Sharper Longer
Perma-Shield coating shields blade against heat
Laser cut stabilizer vents trap noise and vibration and stabilize blade
fully cured concrete
Hole Saw, Carbide-Tipped, 2-1/8-In. Brand_DAP For use with most 21Diablo, 2 1 8", carbide tipped hole saw, cuts both wood & metal, use on wood, nail embedded wood, plastic, aluminum, metal, cast iron, metal & stainless steel, delivers longer cutting life than bi metal for faster cutting performance & increased productivity, 2 3 8" cutting depth for 40 percent deeper holes in single pass & increased productivity, variable tooth design for faster cuts, snap lock plus mandrel system for quick & easy changes with no