Extang Cargo Cleats are built for strength and durability while being easy to use and install. Made from strong glass filled polymer and zinc plated bolts, Cargo Cleats have a solid 500 pound load rating and use the time-tested design of nautical cleats that sailors have been using for centuries. The versatile design allows them to be used with hook straps, stretch bands or rope. Cargo Cleats quickly clamp to most any location on your truck bed's side without drilling holes or damaging your truck or its paint. Rope-tieing and proper truck bed-loading instructions are included along with Extang's Limited Lifetime Warranty.