Plug Grinder, Duty Heavy Duty, Horsepower 1 hp, Grinder Orientation Extended Straight, 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 3/8 In.-24 Male Threaded Adapter (53610), Grip Style Barrel Grip, Safety Stop Mechanisms Saftey Lever, Anti-Restart Technology Yes, Anti-Kickback Clutch Type None, Power Source Air Powered