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 #QG20088 is supplied in each bag Chain tensioners are not required Sold as a pair Tire Sizes: 10.00-20 7.00-20 7-22.5 7.50-17 7.00-18 8-19.5 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; }