... functioning,high speed,fast polishing,equipped with head lock,combination of fast converting polisher and multi-function ... voltage on the backside of the power box.2.Socket should be well earth connected.3. ... Features: 1,Easy to use dialing speed control,2,Forward and reverse operation swith,3,Up to ... Vibration,5,Fashion design for comfrt grip,6,Nail machine stand inclued, 7,Foot pedal for easy operation . ...