I picked up this K&F CONCEPT metal cage to add protection to my DJI Osmo 360 when using it on a 10-foot carbon fiber selfie stick. That setup puts the camera close to the ground, buildings, and other hard surfaces, so some extra protection made sense.I already own quite a few K&F CONCEPT products and have had consistently good experiences with them, so I felt comfortable trying this cage.The cage fits the Osmo 360 snugly and feels solid once installed. There is no rattling or movement inside the cage. When shooting in 360 mode, the cage does not show up in the footage based on what I could see during testing, which was one of my main concerns.With the cage installed, I still have full access to the battery compartment, the memory card slot, and the USB-C port. I was able to swap batteries, change cards, and plug in a charging cable without removing the cage. Everything lines up well and works seamlessly.Where I ran into issues was with mounting. I tested several magnetic mounts, including the K&F magnetic shoe, a DJI base, and a Cinova magnetic mount with clips. All of them had the same issue once the cage was installed. The connection felt loose and slightly wobbly. It worked, but not well enough that I would trust it on a long selfie stick. Without the cage, those same mounts feel solid and work great.The simple workaround is to skip magnetic mounts entirely and screw the selfie stick directly into the threaded mount on the bottom of the cage. That setup felt very secure and gave me no concerns at all.I also like the included lens cover. It fits securely over the cage and does a good job protecting the lenses during storage and transport. It is an extra piece to keep track of, but not a problem in real use.This cage will not protect the camera from a full face-first impact, but it does a good job guarding against corner hits, scrapes, and accidental bumps, which is exactly what I wanted for ground-level shots and transitions near buildings.Pros:Snug, solid fit around the DJI Osmo 360Metal construction feels sturdyDoes not appear in 360 footage during useFull access to battery, memory card, and USB-C portThe threaded mount provides a very secure connectionLens cover fits well and protects during storageCons:Magnetic mounts feel loose with the cage installedNot ideal if you rely on quick-release magnetic basesSummary:This is a well-built protective cage from a manufacturer I have had good luck with across multiple products. As long as you plan to use the threaded mount instead of magnetic mounts, it works very well. I would buy it again for the type of shooting I do.