PULUZ Housing Case Shell CNC Aluminum Alloy Protective Cage Cover with 37mm UV Lens Filter Lens Cap for GoPro HERO4(Black) Prevent camera from crash caused by overheating CNC aluminum alloy injection molded, stable deformation, for aerial photography, you will not worry about the impact of the wind A fixed seat, easy to install 1/4 inch screw hole, compatible with any tripod Can mount UV lens, filter lens, polarizing lens of diameter 37mm