The universal nail file of extremely long lifetime, for professional and household use. File and coarse-grained (100/180 and 180/240). Intended for natural and artificial nails. For shortening, smoothing nail edges and shaping nails. The coarse-grained side is perfect for filing the artificial nails, gel, acrylic and for removing the first layer of hybrid lacquer. It contains the Aluminium Acid which prevents overheating of the filed surface.