Just need to connect the power cable with it to start working. 3,000-20,000RPM with a speed control button makes this electric nail file easier and safer to polish your nails. Multi-purpose nail grinder can be used to trims callous cuticle, removes hard gel, and performs for sanding, polishing, drilling, etc. There are six types of drill bits to meet your nail art needs. The drill can be easily replaced without tools, just pull out and insert the drill. Compact and lightweight design makes it easy to carry and portable to bring it out. Type: Nail Drill Kit Material: ABS Voltage: 100V-240V Frequency: 50-60Hz Speed: 3,000-20,000 RPM Plug Type: EU Plug, US Plug (Optional) Features: Easy to Use, Manicure Tool, Low Noise, Adjustable Speed Size: 13.8cm x 2.8cm/5.43" x 1.10" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Nail Drill 6 x Grinding Bits 1 x Power Cable 1 x User Manual