Functional, versatile, and easy-to-use, it can be used for manicure, pedicure, acrylic, gel, dead skin, callus, and cuticle. It's an essential tool for nail-care veterans and newcomers alike. Specifications Input Voltage Range: AC 100-240V 50-60Hz Output Voltage: DC 12V 2A Drill Speed: 0-35,000rpm (adjustable) Items Included 1xNail Drill 1xPower Supply 1x pedal 1x table stand 1xUser Manual Troubleshooting How to Replace Drill Bit? 1. Turn central barrel clockwise (from "S" to "R") until hearing a "click" sound to release drill bit. 2. Remove current bit and insert desired bit. 3. Turn central barrel counterclockwise (from"S" to "R") until hearing a "click" sound to lock drill bit in place. 4. Then your nail drill is ready to use. Multifunction,Besides manicures Multifunction,Besides manicures and pedicures,can be used on small leather goods,wood and wall carving,punching and sanding. Easy to operate, you can share more nail art creation fun with your friends or family.Handpiece comes with high-quality torque and twist lock system which make it easy to change nail drill bits, Turning the power off when changing drill bit to avoid the damage of too much power is highly recommended. With Adjustable speed up to 35,000rpm, make it easy to use, safe and non-injured hand, Shape and gently clean away uncomfortable hard skins, corns and hard glue. High powered, low noise, low heat and low vibration with a high and adjustable RPM, It is an ideal electric nail file for both professional use in salon and beginner use at home. Powerful Function: Professional high-tech speed bearing and motor make the electric file low heat, low noise, and low vibration. Portable Compact Design: This nail drill machine made of high-quality metal, tiny and lightweight design, easy to handle and carry it anywhere.