The Coupler Safety Pin from T-H Marine is a must-have accessory for anyone towing a trailer. The pin is made from high-strength steel and is designed to fit most standard hitch couplers. The pin is coated in a corrosion-resistant finish that protects it from rust and other forms of wear and tear. The safety pin is easy to install and remove, and the swivel design allows it to be quickly and securely locked in place. This Coupler Safety Pin is an essential tool for ensuring that your trailer stays securely attached to your vehicle, giving you peace of mind and safe travels.