I love film making on my mobile phone and recently bought a cheaper chinese mobile phone stablizer. It works great but I then thought why not use my GoPro (cheap chinese version) on it. I then noticed that the GoPro's are too small and too light to work with the stabilizer and thus I needed a special adapter to attach an action camera to the stabilizer. Most of the branded stuff was way expensive until I found this one. When it arrived I was surprised on how heavy it was, but it was needed to add some weight to the action cam. The camera was then attached to the plate via a screw assembly provided and once plugged in, it worked a treat. I am very happy with this purchase.