These apexes are uniformly positioned but asymmetrical in shape, with a single steep edge which the spring-loaded pawl grabs. Whilst tightening the ratchet, the threaded strap rolls within the axle. This movement shortens and tightens the strap through the load. The webbing is typically manufactured from nylon, polyester, or https://carcarriersupplies.com/product-category/lasso-straps-vehicle-securement/