NAIL FILING MACHINE is an idea filing tool set for nail decoration. It has forward and reverse dual direction-rotations for left or right-handed nail technicians,from 0 to 2,000RPM adjustable speed,quiet & smooth operation handpiece with flexible extension,which is convenient to use for finishing the nails.Technical specifications:Voltage: 110V~240VPower: 12WRated Speed: Up to 20000RPMOne set including: Power Box,Quick-change Handle piece,Bits,ShaftHow to use1. Insert the hand piece flexplug into the poweroutput socket on the main control machine2. Plug the controller into appropriate power source3. Turn the SPEED CONTROL counter clock wise to the MIN status4. Select grinding mould of different sizes according to actual requirement,and the insert the bit into the front of the hand piece directly.5. Press the power-supply's switch to"I" status,and the indicator should power on,then the grinder is resdy for operation.(Press"O",on the power Controller,the indicator should power of,and the grinder is stopped.)6. Press the switch to"I" status in the Hand piece,the Hand piece's power should be opened,and start to turn.(Press "O",Hand piece power should be closed,and stop to turn )7. The tuming directions can be swapPed: "FORWARD" or "REVERSE" on direction.they means clockwise direction and counter clockwise.8. Select the speed level that you need by sliding the speed control knob.Material: ABS- Lightweight, compact and easy to carry- It is suitable for making crystal nails, polishing surface nails and edges of personal care products-The design is based on engineering principle, fashionable in shape and good in touch-High quality motors operate without noise.-6 grinding drills can be used interchangeably and can adjust the speed. They have the functions of grinding and polishing, armor removal and peeling.-Easy to use, safe and hands-freeInstructions: Connect the transformer to the grinder and plug in the power supply; put the grinding head on the main machine when you need it; push the switch (with two choices of speed and speed), and then slowly close the rotating grinding head to your toenail or fingernail,Note:1.Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm)2.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.