Feature●The number of revolutions is displayed on the LED display. Manual and foot pedal can adjust the rotation speed●Equipped with overload protection to protect the safety of users and devices. Vibration, low noise, and low heat●0 - 50,000 rpm stepless speed and good dust-proof●The bar can be replaced efficiently with bare hands●Suitable for: Wood carving, stone carving, gemstone carving, plaster engraving, etcDescription