Materials:Nail Files are made with top quality adhesive tape and emery board materials. Designed with Semicircle Shape & Double Sides, these nice, sturdy & durable nail files provides you a comfortable nail doing experience.Size：12 Pcs size of 7.09 x 1.10 x 0.16 inches, these essential nail art tools are great for filing nails before nail treatment & nail extension. Easy and effective to use, removes ridges on your nail surface, ideal for poly extension gel, natural and artificial nails, manicure and pedicure, making your nails more beautiful.