The staircase is not only very stable but also very high quality. This makes them a good impression in the living room. The stairs can withstand more than the indicated 50 kg. So it's not a problem if something ever accidentally occurs even on it. The simple plastic models the stages are always the same erupted. The acquisition is worth it in any case. Both the cat and our dachshunds have accepted the stairs immediately. The stable version, they are animals surefootedness. The assembly is done quickly and easily. The necessary tools (a hex wrench) is.