Instruct: Classify the given Amazon review into its appropriate rating category
Query: Bases are not threaded? Why not?

So first off, the product itself works great but I purchased this set along with the STAUBER pole, because I saw it had good reviews. I also figured since it was the same company, it should all work beautifully. The problem I've got is that the socket on these suctions cups is smooth but the pole is threaded. If I install a suction cup onto the end of their extending pole, I have to then use the screw it comes with to lock it in place. Problem is that it destroys the threads on the pole. Why 2 different systems like that?