The polishing micromotor fits all type of dental laboratory works and some other situations, such as. Denture/Jade/Nail/Stone/Wood Polishing and Carving.. Rated voltage :110V/60HZ, 220V/50HZ(Please set the voltage before using the machine). Power Input: 110V AC 60HZ. Out voltage: DC 0 – 32V. Torque: gf 280 cm. Main power controller: 1000 – 45000RPM (Max). The power controller can be matched with 35K, 40K, 45K grinding machine handle. Suitable for bur size: 2.35mm. Don’t change the turning directions too frequently, otherwise, it will damage the grinding head. Turn the speed control counterclockwise to decelerate the grinding head to the minimum before turning off and switch the main power source to 0. When adjusting the speed, do not press the right switch button, wait for the handle stop and then press. Furlong idle time, please disconnect the source power. Control box or foot pedal- 1year. Shank diameter:HP 2.35mm. For universal grind, remove, polish and finish of Acrylic, resin, stones, soft metal or wood.