Required in most states, a safety chain acts as a backup if your trailer becomes disconnected from your tow vehicle. Attach the chain to your trailer's tongue, and then connect the S-hook to your tow vehicle. Zinc-coated steel resists corrosion.

Required in most states, a safety chain acts as a backup if your trailer becomes disconnected from your tow vehicle. Attach the chain to your trailer's tongue, and then connect the S-hook to your tow vehicle. Zinc-coated steel resists corrosion.