Die Grinder Duty Heavy Duty Horsepower 1.2 hp Collet Size 1/4 in Grinder Orientation Straight Air Inlet Connection Size 3/8 in Air Inlet Gender Female Max Speed 18 000 RPM Air Inlet 3/8 in Female Tool Style Straight Kit Contents (1) Bare Tool Includes Exhaust Hose 31 in Flat Wrench 11/16 in Flat Wrench 7/16 in Series 300 Collet 1/4 in Safety Features Safety Lever Switch Location Top Power Source Air Powered