Upgraded Quality Materials: These nail filers are made of top quality sand paper, Wooden and Emery board materials, reusable and easy to use. The special properties of both resilient and durability will leave you a much better buffing experience, easy and effective to trim and shape nails, or to remove ridges on your nail surface.Double Sided 100/180 Grit: so you can choose based on your preference, where the coarse 100 grit is rough and coarse and is used to file down the uneven surface of the nail, and the fine 180 grit side used to polish the grease on the nail surface, making it easy to buff and smooth out the rough edges of your nail, ideal for both professionals and at-home users, providing a salon-quality nail buffing experience in the comfort of your own home;Wide Applications: Our nail files are very suitable for natural nails, finger nails, toe nails, and also for acrylic nails, gel nails, and moreMulti Purpose of Usage: it is definitely a must-have-tool for nail beautify in both salon and home. You may have it for nail shaping, nail polishing, nail grooming, nail styling, nail extension, etc., and for your fingernails, toenails, natural nails, acrylic nails, false nails, face nails, manicure, pedicure, etc., and even for your pet cats/dogs nail trimming and grooming!Perfect Size of 7 Inches in Length: the size of nail files from are customized for easier buffing without wasting. So it is a great value in longterm, no matter it is for nail buffing needs, DIY nail art at home, or professional salons.