This is a glass nail file in a straight shape, ideal for shaping natural nails as well as correcting imperfections on acrylic or gel nails. This file has two sides with different grit, 120/180, which defines its texture. The side with 120 grit is coarser and suitable for initial shaping, while the side with 180 grit has a finer texture and is intended for finishing and smoothing. It is an essential tool for preparing nails before applying acrylic or gel.