The Buffers USA 3500 / 3600 / 3700 Series 6-1/32" Twist Lock Pin is made from high-quality steel for maximum durability and strength. It is the perfect solution for securely attaching your trailer hitch. This pin is designed to stay connected even when driving on rough terrain and its unique design prevents rattling and noise when towing the trailer. Made from high-quality steel for maximum durability and strength, this pin is sure to provide a secure attachment for your trailer hitch. FleetPride is your First Click in Heavy Duty®.