[Buy Together]: 10 pieces of black straight nail file sandpaper per pack. These files can easily help you trim your nails to your desired shape or length. [Double-Sided]: 100/180 grit makes filing your nails easier without damaging them. Features a rounded top and double-sided design; the surface is sandpaper, and the middle layer is foam. [Washable and Reusable]: Quick and easy to clean with water and can be used multiple times. File hard nails and ingrown nails at 100 grit, and use 180 grit to smooth the nail edge for a more refined shape. [High-Quality Material]: The nail file is made of high-quality tape and carborundum plastic material, which can trim and shape nails to your desired shape or length without damaging them. [Features]: A must-have for professional nail salons and home DIY nail salons, suitable for girls or women who love nail art and girls or women who love manicures.