This works exactly as I had hoped. I have a similar mount that is designed to attach an external monitor to a top handle, and because that device is all metal, it's very heavy for its small size. This mount is much lighter and thus more convenient. It's lighter because it's mostly made of plastic (besides the metal magnet at top) and also designed to carry much less weight. It's more than sturdy enough for an action camera. The magnet mount at top attaches and detaches from my Osmo Action 4 just like an OEM product would work. It is very quick and secure. The plastic portion feels well made, like modeled plastic and not 3D printer junk. My only possible criticism is that the flexing joint in the middle of the mount that allow the camera to be tilted forward or backward doesn't have a bolt for tightening. It is very strong and the camera does move back and forth on its own, but because that joint is all plastic I'm wondering if it will hold with that amount of grip for long. Overall, I'm very pleased with this mount and it is the perfect tool to allow me to film POV footage of my photo shoots.