This is a great cage for Osmo Action. This gives you full access to the bottom (battery) of the camera, as well as the left side where the SD card and external audio/power connections are located. I use Freewell filters so I removed the 52mm filter mount but if I already had 52mm filters I would use this nifty feature. In addition to the usual mounting tabs seen in the pictures, I removed those as well. There is also a standard 1/4-20 connector for connecting directly to standard tripods. All in all a great cage. I didn't mention how strong it is (aluminum?) but that also means it's heavy. It's more than twice the weight of DJI's standard plastic cage. So if that's important to you, consider that.