High QualityOur trailer lock is an anti-theft device, made of high quality zinc alloy material, which is rust and corrosion resistant and has a long service life.Easy to UseThe coupling part of the ball hitch anti-theft device is strong and effective, saving time and effort when attaching or detaching the trailer or vehicle, easy to install and use.Reliable deviceThe anti-theft trailer lock extends and locks the trailer hitch and prevents the trailer from connecting to the trailer hitch, suitable for all standard trailer hitches.Package ContentsYou will receive 1 x security ball lock, 2 x keys and 1 x Allen key, size 6.5*4.5cm/2.56*1.77in, compact size, easy to store and use at any time.Perfect ProtectionTheft protection security caravan trailer lock is the best protection companion for your trailer, suitable for camping, traveling, parking and other various occasions, provides full protection for your trailer, makes your journey easier and more convenient.