[Double-sided Grit]: Professional nail files have two side grit. The two levels of grit are very useful. The coarse side is very hard, it helps treat an elder relatives thick toenails and gel nails. And another side is use for weak nail and shaping edge of natural nails. [Multi Uses]: Double-Sided Emery Boards is suitable for nail styling and nail polishing. It can be used on your fingernails, toenails, natural nails, gel nail, acrylic nails and false nails.You can use it in professional salons or DIY nail art at home. It is a perfect choice for filing around the cuticle and refining the nail shape. [Durable and Washable]: The Nail files are made of high quality sand bar, very studry and durable, so it can be used many times. And the sandpaper is compact enough to leave no residue even after multi time use If you want to clean it, it is washable, please relax to wash and disinfect wipe it. [Easy to Use]: Much easier to use than other nail files, removes hard gel quickly and will get the required nail shape easily, won't generate much heat on filing. The abrasive is just right not too corse or too fine. [Size & Package]: The professional nail files tool board measures 17.8*2*0.4cm. Ideal nail accessories for a professional or even home use. And there are 10 pcs nail files in one package, you can seprate to carry them. you can put them anywhere and use it anytime