The BackBone Sidearm Connection Kit enables you to join two cameras together by connecting between two Back-Bone Sidearm mounts. This accessory is especially useful when using GoPro cameras for VR360 (Back-to-Back) applications. There are two options for mounting the camera; either horizontally or in a diagonal ‘V’ position for optimal use. N.B. The camera is not waterproof while the Sidearm is fitted.