Die Grinder Duty Heavy Duty Horsepower 1 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