Check the listing for details. Adjustable Cardboard Corner Protector Package Frame 80x30mm Thick 3mm 24pcs. Condition: New. Listed at 19.04 USD. What is this？Mainly used to protect and support package corners during transportation and storage of goods.Widely used in protecting valuable paintings, artwork, picture frames, books, and more, to protect corners from crushing, deformation and breakage.What will I get?Overall Size in Line: 80 x 30 mm / 3.15 x 1.18 inch (L*W)Thickness: 3 mm / 0.12 inchMaterial: Brown Packing PaperIn the package of: 24 x Cardboard Corner ProtectorAre there any advantages of the product?The material is thicker and harder, which can provide good protection for the corners of the goods.Uniform thickness, can keep stable compressive and tensile strength, and enhanced overall strength.The inside edge of the protector is made of good fiber sandpaper, is wear-resistant, high friction coefficient, and is not easy to slide.