【EXCELLENT QUALITY】 These glass nail files are made of high-quality tempered glass with double-sided etched technology, ensuring your nails don't crack or weaken. The glass is strong, durable, and retains the integrity of the filing surface after multiple uses. 【COLOR AND PACKAGING】 20 pieces of nail files with a total of 10 different advanced gradient colors, each with a separate piece of cloth and all in a storage box. This super value pack is the perfect choice for you. 【EASY TO CARRY】 The size of the entire nail file is 140 x 12 x 3 mm, it is lightweight, compact, and convenient to put in your cosmetic bag or purse for daily travel, and can be used not only for fingernails but also for toenails, and can be used for salon and home use. 【REUSABLE AND WASHABLE】 The surface of the glass nail file is easy to clean and not easy to get dirty, which is repeated and durable for use. Hygienic non-porous glass nail files do not corrode, rust, or rot. 【SAFE NAIL CARE】 The double-sided smooth glass file completes any manicure in any direction without damaging the nail, shaping perfectly naturally while leaving them smooth, which can contribute to your nails' good condition. Also suitable for the elderly and children.