The Alezori Replacement Self-Adhesive Files Straight 240 Grit 5pcs are paper files in a straight shape, ideal for shaping natural nails and correcting imperfections in acrylic or gel. They have the same grit on both sides, 240/240 grits. They are used for shaping the side walls of artificial nails and for easily giving them a shape. They are not recommended for shaping the body of the nail, as they may create deep grooves. They are available in a pack of 5 pieces.