Wheel Diameter: 4-1/2"Voltage: 120V Amperage: 6.0ANo Load RPM: 11,000Spindle Thread: 5/8"-11 UNCPowerful 6.0A Motor For Professional Cutting And Grinding ApplicationsService Minder Brush System Eliminates Guesswork , Stops Tool When Preventative Maintenance Is RequiredEpoxy-Coated Field Windings Provides Protection Against Abrasive Dust And Metal DebrisLock-On Slide Switch For Extended-Use ApplicationsTwo-Position Side Handle Is Angled To A Natural Position For Maximum Operator ComfortIncludes Grinder, Wheel Guard, Handle, Flange Nut Set And Spanner Wrench