Diablo's Steel & Demo 9 in. Carbide Tipped Blades for General Purpose cutting, Medium Metal (1/16 in. to 5/16 in.) and Thick Metal (3/16 in. to 9/16 in.) include exclusive features that deliver an unmatched up to 50X L life than standard bi-metal blades. The Carbide General Purpose blades are ideal for cutting nail-embedded wood and ferrous metal applications with a thickness of 3/32 in. -1/4 in. The carbide Medium Metal Blades ’ 10 TPI provides cleaner/smoother cuts in metal, while the increased blade body height produces straighter cuts with less vibration. The Carbide Thick Metal Blades are designed for extreme metal cutting, including high strength alloys, cast iron and stainless steel. All blades feature Perma-Shield non-stick coating for less gumming and friction.