1,600 RPM; .75 HP motor; Precision spiral bevel gears increase reliability; Conveniently positioned forward/reverse knob; Built-in speed regulator for added control; Ergonomically designed composite over-mold grip and throttle lever provide unmatched comfort for the user; Fitted with grease nipple for gear lubrication; Internal silencing reduces noise level to (75 dBA); Rear exhaust directs air away from work area; Fitted with keyed chuck