A60S - General Purpose. Thin .045 width. Use with reusable 5/8-11 adaptor to fit angle grinders. Extremely fast cutting with long life. Ferrous and/or non-ferrous metals (iron, steel, welds, etc.). Specifications: Max RPM - 13300. 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.