The technical details behind this cage SmallRig Vlogging Cage & 52mm Filter Adapter for Insta360 ONE R (2901) is an excellent Form-Fitting Aluminum Cage that protects the camera while delivering plenty of accessory mounts, without interfering with the camera’s port or button. Just slide the camera into the cage from the side, and press the cover to lock it in place. The cage features two cold shoes and several 1/4”-20 threaded holes for accessory mounting, like a microphone or a small LED light. The folding fingers on the bottom let you attach the camera on a variety of GoPro-type mounts and surfaces; while the 1/4”-20 mount at the center on the bottom makes it possible to attach the camera on a 1/4”-20 tripod. The cage features a filter ring that accepts filters with a 52mm thread, which can be attached both on the front and back of the cage. This form-fitting cage offers great protection and convenience. Key features 52mm Filter Adapter Form-Fitting Aluminum Cage for Insta360 ONE R 4K Edition Folding GoPro-Type Mounting Fingers Press-type locking cover to secure the camera Two cold shoe mounts and multiple 1/4”-20 holes Top three Reasons we think you will love this cage Durable Reliable Great protection feature Our experts opinion SmallRig Vlogging Cage & 52mm Filter Adapter for Insta360 ONE R (2901) offers maximum protection and reliability. This vlogging cage is a great addition to your camera accessories.