Excellent Quality: These nail files are crafted from high-quality tempered glass using double-sided etching technology, ensuring your nails won't crack or weaken. The glass is strong, durable, and maintains the integrity of the filing surface after multiple uses. Color and Packaging: Available in 3 colors: gradient purple, gradient blue, and gradient red. Each nail file is packaged in a separate protective case, and finally, all are placed in a plastic storage box. Easy to Carry: The nail file measures 15 x 1.5 x 0.7 mm. It's lightweight, compact, and convenient to slip into your makeup bag, purse, or handbag for daily travel. It can be used for fingernails as well as toenails, and is suitable for salon and home use. Reusable and Easy to Clean: Hygienic glass surface that is non-porous and doesn't get dirty easily. They can be cleaned with water and reused repeatedly. Glass nail files do not corrode, rust, or rot. Care for Healthy Nails: The smooth double-sided nail file completes any manicure in any direction without damaging the nail, perfectly shaping the natural form while leaving them smooth, which contributes to the good condition of your nails.