SmallRig Cage for Blackmagic Design Pocket Cinema Camera 4K & 6k 2203 is a form-fitting cage. It is securely locked to the camera by 1/4’’ screws on the top and bottom, with additional locating pins and rubber pads on the base plate preventing wiggles and scratches. On the top and left side of the cage are built-in NATO rails. Multiple 1/4’’ and 3/8’’ threaded holes and ARRI locating holes are designed to attach accessories. For users who record with Samsung T5 SSD, SmallRig Mount 2245 is a good choice. The cage is compatible with SmallRig HDMI & USB-C Cable Clamp 2246 to fix the cables. It works with SmallRig Metabones Adapter Support 2247 on BMPCC 4K to keep your lens stable. Besides, a built-in hex spanner is provided on the bottom plate.