The things is in itself really good invention, and after I've prepared properly, it works fine. What I do not understand is just that one saves on the quality, the stalk of the Hake after a week use already beginning to weaken and the Größenverstell - point falls apart. This can be it yet so let equal the product manufacture - or one has a function less and sells a stem with fixed length. So it is definitely crap. I habs now splinted with metal pieces and duct tape and holding quite well. Practically, it is definitely.