Titania Hexagonal Wonder Nail File 1452B for Polishing Titania Nail File, 15 cm "6 in 1" for beautiful, shiny nails. 6 surfaces of nail files with different grit sizes used for different stages of nail processing: 1 - coarse file for filing and sculpting natural nails (hardness 180 grit), 2 - fine file for filing and finishing natural nails (hardness 240 grit), 3 - leveling Nail surface (hardness 300 grit), 4 - smoothing (hardness 400 grit), 5 - primary polishing of nails, (hardness 600 grit) 6 - mirror gloss polishing (hardness 4000 grit). Eliminates grooves and irregularities, strengthens the nail and polishes it to the desired shine. Each side of the polisher has its own number that you need to adhere to while polishing the nail plate. Sawing and polishing should be done across the surface of the nail.