Design Philosophy: This trailer hitch lock is a security anti theft device for trailers, ensuring the safest way to leave unattended trailers. Hitch Lock is designed professionally to be secure and sturdy enough to provide all weather protection to prevent trailer theft Compatibility: The trailer lock adopts a wrap around locking method, suitable for trailer couplers from 2 "to 2-5/16". Compact in structure and tightly locked, the hinge adopts concealed welding technology, making it impossible for the destroyer to start. The 0.47 "locking hole is compatible with various safety padlocks High Quality Materials: The trailer coupler lock is made of heavy duty solid stainless steel, weighing up to 1.39 pounds, which can withstand strong physical damage such as hammering or sawing. The surface adopts shot blasting process and antioxidant spraying, making the surface of the trailer hitch locks smooth and burr free, non rusty and has strong corrosion resistance Simple Installation: Close and latch the trailer coupler with the sleeve sliding forward, install the trailer hitch lock with hinge down behind the coupler sliding sleeve, then close both sides and lock the padlock to leave your trailer without worrying about its safety Humanization and Friendly Service: The towing hitch locks is convenient and sturdy, which can be used when the trailer is attached or not attached to the towing vehicle, no need to worry about the safety of your trailer. We are committed to providing satisfactory after sales service Content: 1 trailer coupler lock Weight: 22.2 ounces Suitable for: 2" to 2-5/16" couplers