Have from the experience with the same brackets (now 5 years old) again decided to buy this. This should, however, prove to be a big mistake. In contrast to the older farmers was at the delivered unfortunately the "cost optimization red pencil" set by the manufacturer. Thickness and type of adjustment has been so "smart" that the holder can be used at best for speakers under 2 kg. Did the old brackets Devil M 80 A boxing hang (2.7 kg) and now 2 additional used by the reconstruction of the living room. Even the assembly under real conditions (on ladder, 2.3m below the ceiling) proved with me usually available 2 hands as a small challenge. But ..... you'll be fine. The adjustment but gave the whole then the rest of the speakers made what he wants, a fixation with the models available (does not match the picture at Amazon match - previous version). Has not been possible because "to firmly come from". Everything totally unstable. Cheaper plastic deforms halt more quickly if it is made by product managers cheaper. Who lightweight speakers may be able to use the things. The promised 5 kg experience these holder Never. As you might as well fix the whole thing with NEM knitting. Schade Fa. Bird, again a good product "bad savings". By having a clear and tight "no."