The Excellent Pro Premium Zebra Straight nail file is made of paper material and features a straight shape, making it ideal for shaping natural nails and correcting imperfections on acrylic or gel nails. It has two sides with different grit levels, 180 and 240, allowing for detailed nail treatment. The 180 grit side is coarser and suitable for initial shaping, while the 240 grit side offers a smoother finish, perfect for final touches. This file is the perfect choice for applying acrylic or gel on the tips, as well as for smoothing natural nails.