Feature This is a compact small pen nail machine that is lightweight, easy to use, and is portable enough for you to carry and bring it anywhere you want, enabling you to care for and fix your nails at your most convenient time, at any time of the day. The rotating speed can be adjusted at multiple speeds from 18000-20000rpm, perfect for beginners who are doing their nail work at home, so you can easily control its rotating direction to make your work simple and convenient. This Electric Nail Drill is equipped with the built-in latest technology with continuous variable motor, reducing the annoying noise and it is also made out of Aluminum Alloy materials with effective heat-dissipation to avoid overheating. Its newest smart-chip design has an excellent thermal performance to prolong its working time in high-speed and continuous rotation. You can easily replace the heads without tools for more convenience.