Die Grinder, Duty Heavy Duty, Horsepower 0.6 hp, Collet Size 1/4 in, Grinder Orientation In-Line, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Max. Speed 25,000 RPM, Air Inlet Type NPT, Air Inlet 1/4 in NPT Female, Tool Style Straight, Kit Contents (1) Bare Tool, Includes Collet Wrenches, Anti-Kickback Clutch Type None, Power Source Air Powered