Angle Grinder Wheel Diameter 9 in Horsepower 3.7 hp For Wheel Type Type 27 Max Speed 6 500 RPM Air Inlet 1/2 in NPT Female Air Inlet Connection Size 1/2 in Air Inlet Gender Female Air Inlet Type NPT Lever Type Safety Lever Spindle Thread Size 5/8 In.-11 Reach Extended Reach Duty Heavy Duty Variable Speed Yes