A handy item if you want your Feelworld monitor to have 2 mounting points. I don't know the full list of monitors it fits, but you should be able to spot it. Easy to install, it's made of metal (not plastic) and comes with mounting screws. Why they only included one of these when there are 2 mounting points on the monitor I have no idea. You can swap out the existing portion of the monitor from the side down, but you won't want to do it on set - it's inconvenient and the screws are tiny. Buy, install, forget, it works fine.