The cage features various expansion options, such as 1/4"-20 threaded holes, 3/8"-16 threaded holes and ARRI locating holes, compatible with side handles (ID 2093, 4015), top handles (ID 3765, 2165C), monitor mounts (ID 2903, 2904), tripods (ID 4465, 3989), power bank holders (ID 2336) and mini V-mount battery plates (ID 2987).
eBay