Initially, the holder has made a pretty solid impression, but after a few uses, all joints are so shaky that they adjust themselves constantly, bosonders the turn horizontal. You have to unscrew the unit each time this screw nachuziehen. I use this wall mount for a TV on a pleasure craft. The TV must be constantly brought into a different position, depending on whether, and where we want to see. But to this wall mount is obviously not intended.
