Die Grinder Duty Heavy Duty Horsepower 1 hp Collet Size 1/4 in Grinder Orientation Extended Air Inlet Connection Size 3/8 in Air Inlet Gender Female Max Speed 25 000 RPM Air Inlet Type NPT Air Inlet 3/8 in NPT Female Tool Style Straight Extended Kit Contents (1) Bare Tool Includes Wrenches Safety Features Safety Lever Switch Location Top Power Source Air Powered