SAIT.M.X. - Ferrous Metal. Special bond for cutting sheet metal and other thin gauge metals. Fast burr-free cutting. Ferrous metals (carbon steel, etc.). Stainless steel. Specifications: Max RPM - 12200. Tech Info: Type 1 shape for square, burr-free cutting. Special aluminum oxide formulation offers the fastest cutting, longest lasting thin wheels. Externally reinforced with fiberglass layers to provide ultimate safety in a thin wheel. Wide range of sizes available to fit both angle grinders and circular saws.