Nail File with a core in wood characterised by a 120/120 grit in both sides. File that has to be used for the natural nails filling. Because of its flexibility and the fact that it is less aggressive with respect to the other files, it is suggested during te Manicure stages. Usable moreover to finish the Nails extension work. It is NOT washable, for this reason it has to be considered for a single use. It is 100% composed by natural product.