Unfortunately, the product keeps not deliver what it promises. I wanted to weighting 4kg HiFi speaker mounted on the wall. So only 50% of the specified weight maximum. Unfortunately, the ball-clamping could not fix in certain angle. The boxes from buckling until they rest with the corner on the wall. I am an engineer and I really wonder who came up with this clamping. Simply makes no sense at all. Oddly, the screw to the wall is quite massive and determined can bear much more than 8kg. However, the ball-clamping head is seemingly made just for tiny satellite speakers. More than 1-2 kg I would not want to hang. And there's holder. the less thickly on the wall. Amazon has as usual delivered very fast, but unfortunately, this time a bad product.
