Material: This nail file is made of high-quality nano glass material, a harmless nail tool. Just use it for a short time to get a smooth glass shine. Glass nail polishers are quite long-lasting and do not break easily, so they do not need to be replaced as often as other nail files. Portable size: The glass nail grinder is 9 x 1.3 x 0.3 cm/3.54 x 0.51 x 0.12 inches, small and thin, easy to carry and convenient to store. Polished natural nails: Our nail glossers use physical principles to achieve the healthiest polished nails, achieve shiny and smooth effects, and get rid of the usual rectangular nail files that damage the nail surface and unhealthy chemical nail polish. Easy to use and clean: Just use it gently to polish the nail edges or polish the nail surface. Perfect for finger care and salon use. This nail file can be washed and used repeatedly, which is clean and hygienic. Suitable for all people: Easy to place in your handbag, well polished at any time, suitable for women, girls, men, even pregnant women. Best gift for anyone that can bring health and beauty to your lover and your children.