Features:Collets type: 2.4mm Voltage: AC 100-240V (EU plug) 50/60HZVariable speed control: 18000 RPM up to 20，000 RPMLight Weight and PortableThe nail drill can be used for natural nails as well as artificial nailsPerfect for professional or home useThis tool is design for carver， engrave， rout. Grind， sharpen， sand， polish， drilland moreUnplug the tool form electric outlet before loading a bitPress shaft lock button， use the collet wrench to loosen the collet nut. Insertthe bit， and tighten the collet securely，. But avoid excess tightening of thecollet nut and never use the damaged bit.There 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 to findthe speed needed form 18000 to 20000rpm.Slide the switch to black dot for complete stop.When finished， turn off the tool and unplug it.Specification:Color: PinkDimension: 160mm x 24mmNet weight: 160gPackage weight: 160gPackage Content:1 x Electric nail drill machine1 x AC adapter6 x Bits (5 diamond bits， 1 emery rod with 4 sanding bands)1 x User manual (in English) not include box.