Picked this up so that I could mount my Action 5 camera on top of my other tripod mount while recording/streaming my daughter's volleyball games. I like to be able to get a wide angle shot and also a zoomed in shot of the court. This allows me to keep the same angle as the other shots since the cameras are on the same vertical axis.The snap magnetic mount is strong and the camera easily locks into place. It would with or without a case on the camera which is nice. I tried it with an aluminum body frame as well as a plastic frame and both worked without any issues for it snapping on.The mount allows you to use a 1/4-20 or cold shoe for attaching your camera to your main rig. The thumb tightening screw is a little bulky. Also, there is no tightening or loosening of the angle adjustment. Over time I feel that this may wear out and then the action camera will just flop around. Having an Allen screw there would be a lot better.Because of the lack of the tightening screw and the oversize thumb screw I am giving this item a 4 out of 5 stars. Still a solid mound and worth picking up. The price is reasonable so if it does loosen over time you can pick up a replacement for a fair price.