1. These glass nail files are made of high-quality tempered glass with double-sided etching technology to ensure that your nails will not crack and weaken. The glass is strong and wear-resistant, and maintains the integrity of the file surface after multiple uses 2. Easy to carry, light and compact, easy to put in your cosmetic bag, purse or handbag for daily travel, not only for nails, but also for toenails, can be used for salon and home use 3. Reusable and easy to clean: The hygienic non-porous glass surface is not easy to get dirty, it can be washed with water and used repeatedly, the glass nail file will not corrode, rust or rot 4. Safe Nail Care: Double-sided smooth file-faced glass file can finish any manicure in any direction without damaging the nails, perfectly shape and natural, while keeping it smooth, it helps to keep the nails in good condition