What it is: A dual-grit nail file with a plastic case. What it does: This dual sided nail file has a rough surface to shape nails, and finer grit to finish nail edges. It comes in a plastic case to keep belongings in your purse scratch-free, and to keep the nail file clean. The file features 100-grit and 180-grit textures. Sephora is the exclusive beauty retailer for this product.