Features: - Nano long-term friction does not heat, no pain, polishing does not damage nails. - A handy little nail art tool to buff and shape up uneven nail surface before UV gel and acrylic application. - Washable and easy to clean., used for shining and shaping bright nails, and the brightness can maintain at least more than 20 days. - Lightweight compact and convenient to put in your cosmetic bag, allow you to use anytime and anywhere.