If you use any type of artificial nails or wraps, rotary files make working on your nails a lot faster and easier. We searched a while to find this one. This rotary file works really well with our nails, acrylic nails, wraps etc. Small, precise, and powerful. Variable speed from 3,000 to 23,000 RPM. Good torque at low speeds. Lightweight for easy operation. Most rotary nail files with these features sell for well over $100.00. You can fully taper and finish our nails with this rotary file in seconds. It's recommended that you use professional bits for best results. Great for all types of artificial nails. 100-240 volts. 50-60Hz USA electrical system or equivalent. Uses standard 3/32" bits. (Bits not included).