I did quite a bit of research for a suitable security device for my caravan. There are so many choices on the market all different prices. I ended up choosing the Bulldog mini hitch lock based on the good reviews it received on various forums and websites. It was within my price range and chose the Safe Shop after researching online and they offered the best price. I really like this hitch lock, its very easy to attach to the hitch on the caravan and equally easy to take off. I like the idea of the rubber cover which helps to protect it from the elements. To summarise it is a substancial product and an excellent price for what you get.