In principle, a good thing, of the execution not: the whole structure is held together with plastic screws, which are tightened with a supplied "wrench". If you want to draw, however, really tight these screws (and I'm certainly no muscle man), you can experience a big surprise: the screw heads break off easily. I have already worn out in this way as many screws that I had now pull the thing out of circulation, because I could not fix the items. Even otherwise, the thing does not work really stable. Conclusion - so what's determined in better: Stay away!
