1.【Crystal Nail File】: A package comes with 6/12 pieces glass nail files in different colors, and each crystal nail file with a pen cap to protect the nail files from breaking and avoid scratching your items, enough quantity to satisfy your various needs, you can also share with others. 2.【Workmanship】: Using double-sided etching technology, ensure that your nails do not crack or weaken, are sturdy, wear-resistant, and not easily broken or deformed. After multiple uses, maintain the integrity of the file surface. 3.【Potable and Reusable】: These manicure fingernail files are lightweight and portable, equipped with case for easily carry and storage, you can put it into your cosmetic bag, purse, or handbag for convenient use, and the glass surface is not easy to get dirty and easy to clean, you can use for many times after washing. 4.【For Nail Care】: These crystal glass nail files are suitable for various types of nails, such as natural nails, toenails, rough nails, artificial nails, acrylic nails and more, a practical nail art manicure tool for precision filing, can be applied for nail salon and at-home use. 5.【Double-sided Design】: The crystal fingernail file is filing in both direction, and the double sided smooth filing surface glass file completes any manicure in any direction without damaging the nail, leaving nails smoothly and gently with no jagged edges, so your nails will not scratch yourself.