These auto-tightening and centering snow chains ensure a snug fit and eliminate the need to stop and adjust after installation. The Peerless 2318 Auto-Trac Tire Chains for Light Trucks and SUVs fit a wide variety of sizes. The dual high-impact polycarbonate ratchets provide the method for easy installation and removal in minutes. These chains can be installed from outside the tire . eliminating the need to slide under the car. Provide some peace of mind to the drivers you know by giving a set of these light truck tire chains as a gift.