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 50 times longer cutting life than bi-metal, these new carbide-tipped hole saws offer faster cutting performance and increas DIABLO DHS3000CT - 3" Carbide‑Tipped Wood & Metal Holesaw