The is constructed of a durable, yet lightweight alloy. It has a yellow powder-coated finish for both visibility and protection from the elements. The lock encases the kingpin on the pin box which makes coupling impossible. It's the perfect solution for security when leaving a trailer parked for the season. The spring-loaded lock cylinder makes operation very easy, so you never question if it's locked or unlocked. Two keys are included.• Provides security for 5th wheel trailer while not in use• Alloy construction is lightweight and durable• Yellow powder-coated finish for protection and visibility• Installs in seconds• Spring-loaded lock cylinder for simple operation• Lifetime warranty Spring-loaded lock cylinder makes operation very easy Includes two keys | TFW60 5th Wheel Trailer Kingpin Lock in Yellow