Pencil Grinder, Heavy Duty, Horsepower 0.1 hp, Collet Size 1/8 in, Exhaust Location Rear, Max. Speed 100,000 RPM, Air Inlet 1/4 in NPT Female, Air Inlet Connection Size 1/4 in, Air Inlet Gender Female, Air Inlet Type NPT, Kit Contents (1) Bare Tool, Whip Hose I.D. 1/4 in, Head Type Standard Head, Safety Stop Mechanisms None, Lock-Off Switch No, Lock-On Switch No, Brake Type None, Anti-Kickback Clutch Type None, Safety Features Non-Slip Grip, Anti-Restart Technology No