... Mini Polish Nail Machine Description:POWER: Single Phase, 50-60HZ, Double Insulated RPM: Single Speed 20000Variable Speed: 18000~20000 Operation:This tool ... is design for carver, engrave, rout, grind, sharpen, send, polish, drill and more.Unplug the tool ... line on it. Slide the switch to find the speed needed from 18,000-20,000RPM, Slide the ...