Aluminum Oxide Connector Size 5 in Connector Type Unthreaded Hole Grit 60 Overall Diameter 16 in Overall Thickness 1 in Compatible Tool Type Cylindrical Grinder Surface Grinder Primary Material Applicationn Aluminum Cast Iron Stainless Steel Steel Tool Steel Specification 32A60-K5VBE Wheel Hardness K Wheel Type Type 1 Maximum Operating Speed 2 030 RPM Series 32A Grade Medium Bond Type Vitrified Color Purple Item Straight Grinding Wheel