Aba Group Metal File Pads #180 x25A set of 25 pieces of abrasive pads with a grit of 180, which can be easily attached to the base of the file. Aba Group Set of Replacement Attachments for Metal File Crescent - Grit 180, 25 piecesThey do not slip or move, and in addition, they adhere firmly to the base. Grit 180 will be ideal for basic development of the natural nail plate. It also works well to soften acrylic and gel surfaces. Set: 25 pieces The overlays are disposable and should be disposed of after the work is finished. REMARK! Metal file not included. This is just a preview photo of the use of interchangeable overlays! Directions for use: Tear off the backing paper from the pad, fix with glue on a dry and clean file handle. After the treatment, peel off and discard the abrasive pad. Remove adhesive residue with acetone-based liquid.