The CargoSmart Cambuckle Strap is designed to work with E-Track and X-Track rails to provide better securing power when hauling your cargo. Works just like a normal cambuckle tie-down strap. SmartWeb technology provides webbing that is stronger than standard webbing. Provides a 667-lb working load and 2000-lb breaking strength. Made with vibrant orange high visibility polyester webbing with steel anchors.