The trailer does not remain flat through the huge eye. Once you move your head to the trailer sets to the corresponding page. The chain is incredibly thin and almost invisible. In combination with the wobbling trailer a really strange sight. I got the chain for 11 euros on sale, more is both together and not worth it. Because the picture conveys a flat eyelet on sale but you do not have much time, so I did not watch the video. The supplied box stinks inside very chemically. Too bad a mistake.