1. CNC aluminum alloy injection molded, stable deformation, for aerial photography, you will not worry about the impact of the wind. 2. Prevent camera from crash caused by overheating. 3. A fixed seat, easy to install 4. 1/4 inch screw hole, compatible with any tripod 5. Can mount UV lens, filter lens, polarizing lens of diameter 37mm 6. Note: The camera is not included.