SmallRig 2203 [Unopened] This is a cage for the Blackmagic Pocket Cinema Camera 4K. Designed to protect the BMPCC 4K camera while enhancing its expandability and providing various possibilities for video shooting. The camera is secured with 1/4-20 screws on the top and bottom, and the bottom frame has anti-rotation pins and rubber cushions to prevent the camera from rattling. Because it is specifically designed, the cage does not interfere with the camera's battery/SD card replacement or the functions of buttons and dials. Compatibility is only with the BMPCC 4K. Although it is unopened, there may be damage to the box, so please understand. If you have any questions, please feel free to contact us. There are multiple units available, so if you would like to purchase multiple items, please let us know in the comments.