Angle Grinder, Wheel Diameter 5 in, Horsepower 1.1 hp, For Wheel Type Type 27, Max. Speed 12,000 RPM, Air Inlet 1/4 in NPT Female, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Air Inlet Type NPT, Lever Type Safety Lever, Spindle Thread Size 3/8 In.-24, Reach Standard Reach, Duty Heavy Duty, Variable Speed Yes