Black Nail File: ForPro O-Files Foam Boards are made from high quality foam and sand paper. These double-sided nail files are a necessary addition to your manicure accessories. | Double-Sided Nail File: The black nail files feature different grits on either side, giving you a choice of 100 grit nail file or 180 grit nail file. | Nail Care: These nail files are specially designed for your convenience, hygiene, and quality. They are perfect for removing excess product leftover from your gel and acrylic nails. | Disposable Nail Files: Recommend for one and done use, the nail files are individually-wrapped in a self-seal bag for easy opening. | Size and Other Details: The O-Files measure 6” L x 0.75” W. Each package contains 100 disposable nail files.