Diablo 1-7/8 In. Carbide-Tipped Hole Saw Weiser They install through your extension

They install through your extension springs to prevent injury in case of breakage

Premium quality aluminum screen door grill

Compound is easy-to-sand

(35 mm) Length Knob

Diablo 1-7/8 In. Carbide-Tipped Hole Saw Weiser They install through your extensionCarbide tipped hole saws cut both wood and metal (wood, nail embedded wood, plastic, aluminum, metal, cast iron, stainless steel and metal). Delivers longer cutting life than bi metal for faster cutting performance and increased productivity. 2 3 8 In. (60 mm) cutting depth for 40% deeper holes in one pass and increased productivity. Variable Tooth Design for faster cuts. SnapLock Plus mandrel system for quick and easy changes with no down time