... ,3000pcs 5-30 work days Features :This tool is design for carver, engrave, rout. Grind, sharpen, ... is an off/on switch. When the switch is on, the tool runs at 20,000rpm. There is a switch ... indicator with an orange line on it. Slide the switch ... needed form 18000 to 20000rpm. Slide the switch to black dot for complete stop.When ...