SmallRig Vlogging Camera Cage and 52mm Filter Adapter for Insta360 ONE R 4K Edition 2901 is a form-fitting aluminum cage that protects the camera while providing plenty of accessory mounts, without interfering with the camera's button or port. Simply 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.