Trailer Chain 3500lbs Towing Wire Ropes with Double Spring Clip Hooks for Trailer RV This trailer chain is designed to connect the trailer to the vehicle to help prevent complete separation in the event of a disconnection during towing.The 39 inch long chain comes with a pre-attached chain hook for secure coupling.The 0.47 inch S hook helps prevent accidental disengagement.Made of galvanized steel, the chain supports up to 3500 lbs and offers strength, resistance to stretching, and.Suitable for use with trailers and RVs, these chains are required for all towing applications and provide added if the trailer becomes unhooked during transit.Two chains should be used when connecting for towing.The chains should be crossed once underneath the coupler and attached to the trailer hitch receiver chain loops.Item Type: Trailer Chain Material: Galvanized steel Length: Approximately 1 m (39 inches), manual measurement with possible 2–3 cm variation Load Capacity: 3500 lbs Chain Wire Diameter: Approximately 7 mm (0.28 inches) S Hook Wire Diameter: Approximately 12 mm (0.47 inches) Fitment: Compatible with trailer and RV