Did the castle almost a year in operation, and am very excited. It can be open in one second and go on just as quickly. The big advantage over other castles is: it has no weak point. "A chain is only as strong as its weakest link" - and the problem, many castles. These have a thick chain, but a 3mm connection to the castle. This castle is different, everything is uniformly strong.
Moreover, it is very portable, you can specify the chain bind to a fence or merge with another bike. The price so definitely worth it!