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