... or stationary machines. Choose from wheels for cutting and grinding sheet metal, Depressed Center Wheel, Type 42, Cutting and Grinding, Dia. 9 In., Thickness ... , Max. RPM 8308, For Various Ferrous Metal.For grinding and cutting metal,sainless steel,stone with Angle Grinder.Item NO.: ... OxideGrit36Bond TypeResinMax. RPM8308ApplicationFor Various Metal and stoneCountry of OriginChina Cutting and Grinding