USB Power Supplys Handheld Mini Electric Grinder Nail Gelatum Removing Tool Machine Speed Adjustable Grinding Rotary Tool Kit with 6 Grinding Heads This USB power supplys mini handheld electric grinder drill tool can be used in your home, nail salon and so on, portable size and powerful functions. If you need it, come on and have a try, it will not let you down. Features: Necessary engraving & grinding tool: Comes with 6 different grinding heads to meeting different needs for DIY carving and grinding. Widely use: Suitable nail gelatum removing, with adjustable speed of 3000~20000RPM, mini nail power drill machine set. Anti-rolling and comfortable design: The handy and fall-arrest grip provides superior comfort and control, give you a better using experience. Perfect gift choice: You can sent it to your friends or families as the birthday gift, anniversary gifts and so on. Easy e: You can press and hold the sanding button, then loosen the heads screw, and insert the sanding heads and twisting to tight the opposite direction after insertion. Specifications: Material: plastics Color: 8 optional Singles speed: 20000 Variable speed: 3000-20000 (Adjustable) Collets type: 2.4 or 3.2mm Spring chuck type: 0.3-3.2mm Cable length: 920mm / 36.2in Item length: 150mm / 5.9in Package size: 190 * 130 * 40mm / 7.5 * 5.1 * 1.6in Package weight: 135g / 4.8ounce Packing list: 1 * Electric Grinder   1 * USB Cable 6 * Grinding Heads 1 * User Manual