Our grandson got the electric box as a gift for Christmas. The joy did not last long because after repeated plugging together almost all the small cruciform connectors adopted. They disassembled in its original items, the little plastic sticks broke inside, and a subsequent gluing was not successful - a pity!
Addendum: Having the complaint appears directly from the manufacturer, I have been without its problems and free sent 12 new connectors! - The service is also not self-evident!