After the first installation of approximately 10kg TVs I was a bit skeptical because the mount when pulled strongly after a long movement still rocked and the turn (90 degrees) loud creaking noises at the screw connections were heard.
Now, after four weeks use and almost daily turning the 46-inch model at 90 degrees the Knargeräusche are gone and I am satisfied with the holder, at a price.
In summary, I issue a strong buy recommendation for the price, for those seeking a convenient holder with no frills, which allows a 46-inch monitor to rotate 90 degrees. Because when you turn the TV quite a lot of force is necessary and must be tackled in the right places, I would rather anxious for people who want to use the rotating mechanism on a regular basis, however, advise you to a holder with a double or even hydraulic arm.