Have ordered the supports for my 5.1 home theater system (Devil Consono 25 MK2) and am fully satisfied. the installation is super easy even if you can not use the screw for the thread in the boxes that were included in the brackets, as these are a bit too small. For the price of the holders but each have a few euros left should have to obtain the correct screws. The brackets appear well made and sturdy. I'm very satisfied. (Also attached to optical super black boxes) :)