Die Grinder, Duty Heavy Duty, Horsepower 0.4 hp, Collet Size 1/4 in, 6mm, Grinder Orientation Right Angle, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Max. Speed 20,000 RPM, Air Inlet Type NPT, Air Inlet 1/4 in NPT Female, Tool Style Right Angle, Kit Contents (1) Bare Tool, Includes Collet Wrenches, Grip Style Barrel Grip, Anti-Restart Technology Yes, Switch Location Top, Power Source Air Powered