The paper nail file in a straight shape is ideal for shaping natural nails and correcting imperfections on nails treated with acrylic or gel. With two hardness sides of 100 and 150 grits, it offers the flexibility to adjust the texture to your preference. The grits determine the roughness of the file's surface: the higher the number, the smoother the texture, while the lower the number, the rougher it is. This file is provided in a package of 25 pieces, offering a long-lasting solution for your nail care.