1、Exquisite Design: The structure is exquisite, the lock accessories are tightly combined, once locked, it is not easy to open, anti vibration and impact proof. 2、Spring Loaded: Exclusive design and spring loaded safety latch help ensure secure attachment. Even on bumpy roads the clamp latch is not easy to open. 3、Parameter: This trailer lock is 182mm long, 66mm mounting hole pitch, 8mm mounting hole, please check the size to confirm the suitability before purchasing. 4、Material: Made of high hardness galvanized iron material, strong and durable, high strength, it is not easy to fold, not easy to damage, long lifespan. 5、Application: Heavy duty manufacturing, simple opening and closing, spring loaded, tight locking, suitable for trailers, RVs, campervans, caravans,