Universal Fit Coupler Lock. With a 14inch diameter pin and has a padlockstyle design, this trailer coupler lock fits latchtype couplers with a maximum span of up to 34 inches Reliable Strength. This trailer pin lock is made of highstrength zinc alloy and protected from the elements with its black painted finish, while the coupler pin is shielded against corrosion with a durable zinc plating, enhance the the life of coupler lock and the security Highly Security. To help protect your trailer away from theft, this trailer lock is made from highstrength steel and has a padlockstyle design Easy to use. This padlockstyle trailer tongue lock has a heavyduty look to deter theft. Uses a simple 14turn lock activation for convenient locking and unlocking, Simply spin the flat key 57 times to open or close our hitch locking pin 2 Keys Included for Your Convenience. 2 keys comes in the package. If you encounter any problems, please feel free to contact us through the Ask a Question button. We are always happy to help and are committed to providing a responsive solution 247