Versatile heavy duty air driven handpiece operates at variable speeds with foot control from low speed to 55,000 RPM at 60 psi.Heavy Duty vane air motor is renowned for its exceptional durability.Ultra torque generating 1⁄4 horsepower at pressures above 40 psi.Unique motor stays cool even at speeds of 55,000 RPM with muffled air exhaust.Vibration free due to special 3-jawed lathe collet chuck and two main sealed support bearings resulting in increased comfort and more accurate cutting.Quick disconnect feature for convenient portability from station to station.“Also see the Micromite Black Demon for Lab Use"