Highway Truck Chains? CAM locking system eliminates the need for chain tighteners. Simply tighten CAM lock with included tool to tighten chains to your tire. Sold in pairs.CAM tool #QG20095 is supplied in each bagChain tensioners are NOT REQUIREDSold as a pair Tire Sizes: 235/80R22.5275/70R22.5245/75R22.5285/65R22.5245/80R22.537X11.5R15255/70R22.538X10.5R15255/75R22.57.50-22.5255/80R22.58.25-20265/70R22.58.25-22.5265/75R22.59-22.5 th, td { padding-right: 20px; } .product-table-top { display: block; max-width: -moz-fit-content; max-width: fit-content; overflow-x: auto; white-space: nowrap; }