?Set includes?cordless nail drill machine , 12 nail grinder bits, USB/TYPE-C charging cable and electric nail filer instructions,we provide 7/24H help if you have any questions. ?PORTABLE & EASY TO USE?This nail filer electric is made of high-quality metal, ergonomic, lightweight, more comfortable to hold, compact size, cordless battery life up to 2 hours, you can put it in your pocket to carry around and use it anywhere. ?5 SPEEDS, TWO DIRECTIONS OF ROTATION?: The electric nail file has 5 adjustable speeds and two directions of rotation for you to choose from, allowing you to experience the fun of a professional salon at any time. ?REECHARGEABLE, CORDLESS?: Electric nail polisher can operate continuously cordless for up to 2 hours.It also works with any USB outlet,such as mobile power,laptop,rechargeable torch, AC adapter, etc,so you can get your nails done anywhere,anytime. ?PROFESSIONAL NAIL DRILL KIT? : This electric nail file with 20,000RPM powerful rotary motor and 12 nail drills can be used for all aspects of shaping, buffing, polishing, sanding, buffing, and removing acrylic nails, and dead skin.