Cambuckle tie down straps has a spring-loaded cam with a knurled edge to keep the strap from slipping. To secure cargo, the free end of the strap is pulled until the strap is tight. Ratcheting straps have a mechanism with a toothed barrel and a handle. By pulling the handle back and forth, the desired tension can be applied to the strap. Ratcheting straps can apply more tension to secure heavy loads, while cam buckle straps can secure lighter loads without causing damage from over-tightening. Ratcheting straps that are retractable are easy to use and they can be permanently mounted.