Diablo DHS2125CT High Performance GP Hole Saw, 3/8 in Arbor, 2-3/8 in D Cutting, Carbide Cutting Edge           Diablo introduces the first carbide-tipped hole saws on the market to cut both wood and metal (wood, nail-embedded wood, plastic, aluminum, metal, cast iron, stainless steel and metal). Delivering 50X longer cutting life than bi-metal, these new carbide-tipped hole saws offer faster cutting performance and increased productivity.