High Density Polymer. Suitable for webbing up to 4″-5.25″wide and extends approx. 3.5″ to protect the load. Has excellent low temperature performance, down to -20°F.Along with our standard rugged flatbed products, Ancra web accessories offer high performance and durability. Sturdy corner and web protectors prevent abrasion of cargo and cargo-securing straps. Corner Protectors not to be used as sling protection for overhead lifting.