Peerless Auto-Trac Passenger Car Tire Chains: * Worry-free ratchets that automatically tighten and center the chains on the tire * Superior traction performance * Easy to install and remove * For a wide variety of passenger tire sizes * Meet Class "S" clearance requirements * Connect the cable, attach the 2 self-tighteners and drive * Dual high-impact polycarbonate self-tightening ratchets eliminate loose chains and re-tightening stops * Diamond pattern cross chain provides a smoother ride * Convenient and easy to use carrying case