Pencil Grinder Heavy Duty Horsepower 0.1 hp Collet Size 1/8 in Exhaust Location Rear Max Speed 35 000 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