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Do your own nails with this essential! The Mani/Pedi professional electric nail drill machine which is great for all types of nail work from sculpting, buffing, to polishing. Features: MULTI-USAGE: Perfect for manicuring, pedicuring, carving, routing, grinding, sharpening, polishing and more. FUNCTION: The finger file electric machine is used to trim nails, making the nails more beautiful. TARGET USER: Great for beginners, professional beauty salon, spas, or home use. EASY TO CHANGE: Features an excellent selection of sanding bits. With 6 optional standard metal bits, the filing head is easy to change. HIGH QUALITY: Low noise and vibration for smooth and long-time operation. Operation: 1. Unplug the tool from the electrical outlet before loading a bit. 2. Press shaft lock button, rotate the collet nut anticlockwise (but do not take the nut out) insert the bit, and tighten the collet clockwise securely. But avoid excess tightening of the collet nut in case of damage in the