Product Features: Professional nail drill set including 1 electric nail drill and 17 drill bits (6 Original Drill Bits, 5 Carbide Drill Bits, and 6 sand bands) Multifunctional tool for polishing, engraving, cutting, removing gel and epidermis of acrylic and nail polish USB charging with standard interface for use with any USB outlet including power bank, laptop, AC adapter, and car charger Easy to use and portable with high-quality metal and pen-shaped design Five speed control button with adjustable speed range of 3,000 to 21,000 rpm for easier and safer nail smoothing Benefits: Save time and money by doing your own professional-looking nails at home Convenient USB charging allows for use anywhere in the world Portable design makes it easy to take with you on the go Adjustable speed settings ensure safe and effective use on any type of nail Multiple drill bits provide versatility for various nail treatments