First of all, the product photo and the photo on the manual is incorrect: the center screw must be above and the side with the two screws at the bottom. I had specially looked at the instructions and then drilled the holes for the enclosed heavy-duty dowels. How to write the other buyers, you can not get from the wall ... you can only try as possible flush with the wall abzuflexen ... Because when the middle screw is below interferes with the enormous ... well, I thought with two Heavy anchors should the holders also hold and have sawn off the screw. However, the carrier is still not fit, it is about 1cm too short so that the carrier can not be provided as mounted on the ball head! Did the holder left on the wall (as it is too late to return) and the carrier drangehangen. But it is far from optimal ... shame!