The TowSmart Safety Chains protect your boats, campers, trailers, equipment, and other valuable assets when towing a trailer. Safety chains are required by law and should always be attached when hauling. The purpose of the safety chain is to provide and hold a connection between the towing vehicle and trailer in the event of separation of the trailer. For superior safety, always use two chains and attach in a crisscross pattern underneath the trailer coupler. The chains feature heavy duty S-hooks and are made of corrosion-resistant materials designed to withstand harsh weather conditions. Includes 2 safety chains with latching S-hooks.