Pencil Grinder, Medium Duty, Horsepower 0.1 hp, Collet Size 1/8 in, Exhaust Location Rear, Max. Speed 70,000 RPM, Collet Guard Type None, 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. 5.5 mm, Head Type Standard Head, Lock-Off Switch Yes, Lock-On Switch Yes, Brake Type None, Anti-Kickback Clutch Type None, Anti-Restart Technology Yes, Dust Management None, Vibration Level 0.6 m/sq sec