The Expansion Adapter Cage from SmallRig provides added protection and accessory mounts to your DJI Osmo Pocket 4, Osmo Pocket 3, or Xtra Muse gimbal camera with attached battery handle. The cage mounts snugly onto the bottom of your Osmo without the need for tools and offers unobstructed button and port access. There are NATO rails on each side of the cage, and they each feature 1/4"-20 accessory threads.