Die Grinder, Duty Heavy Duty, Horsepower 0.7 hp, Collet Size 1/4 in, 6mm, Grinder Orientation Right Angle, Air Inlet Connection Size 3/8 in, Air Inlet Gender Female, Max. Speed 18,000 RPM, Air Inlet Type NPT, Air Inlet 3/8 in NPT Female, Tool Style Straight, Kit Contents (1) Bare Tool, Includes 1/4 in Collet Insert, 6mm Collet Insert, Safety Stop Mechanisms Safety-Lock Throttle Lever, Safety Features Safety Lock Lever, Anti-Restart Technology Yes, Anti-Kickback Clutch Type None