Univeral Trailer Hitch Lock Double locking ratchet mechanism Extra thick hardened steel shackle Suitable for virtually every type of trailer Weather resistant Material: Hardened steel Manufacturer’s Warranty: Lifetime guarantee Tessi Univeral Trailer Hitch Lock | Tej100 The Trimax Universal Trailer Coupler Lock is a high security lock that prevents the theft of trailers while unhitched from the tow bar. The unique design makes it suitable for virtually every trailer and is simple and easy to install and remove. This water resistant trailer coupler lock features a high security double locking ratchet mechanism, an extra thick hardened steel shackle and is the ideal solution for keeping your trailer safe.