I installed two of these in my square drop off road camper. There was previously no convenient place to put a drink prior to installing these since my camper is essentially a bed with doors. I have one near each door for me and my wife, in reach of us at all times. I used 3M VHB tape; supplied by me, and it holds great (VHB tape is amazing, and I use it for everything instead of using screws). This product holds our drinks, it's easy to adjust, and accepts everything from a beer can to a Nalgene bottle. Also, adjusting from one container size to another takes absolutely no effort. So far I see no reason to believe it will ever break. It stows away when closed, taking up no space, and provides a much needed function in my camper. I did buy other versions of this product, namely the kind where the adjustable pieces were on a slide as opposed to a pivot, and I threw those away because they felt super cheap. Also, the versions that use an adjustable slide were harder to adjust with one hand quickly.
Rating: [5 of 5 Stars!]