The banana-shaped nail file is made of cardboard material and is designed to help shape your nails. It is an essential tool for nail care, as it protects the cuticles from injuries. It features two sides with different grit levels, 100/180, meaning one side is coarser for the initial shaping and the other finer for the final finish. This file is ideal for preparing nails, whether natural, acrylic, or gel nails.