1. : The main body of the trailer lock is made of lightweight and highstrength aluminum alloy, which has the advantages of light weight, antidrilling and anticutting; The surface is coated with antirust coating, anticorrosion, antirust, resistant to harsh climate, durable 2. High Visibility Warning Tag: Our trailer king pin lock comes with a warning label with a chain connection, which makes it easy for you to notice your lock and reminds you to remove it before connecting it to the trailer; On the other hand, it can warn some people with malicious intentions 3. Enhanced Security: The heavyduty king pin lock can effectively prevent unauthorized trailers from being installed on the tractor, protecting your property ; Our lock has been upgraded with side key precision lock cores more convenient to use, including high security snake keys 2 to ensure the highest level of security (Note not to lose your keys) 4. Easy to Install: The fifth wheel lock is quick and easy to install, you just need to engage the lock to the trailer hitch, then insert the key into the lock cylinder and rotate it 180 degrees, the main pin lock is firmly installed (Note: Each lock has its own key and different locks cannot share keys)