PULUZ Housing Shell CNC Aluminum Alloy Protective Cage with 37mm UV Lens Filter & Lens Cap for GoPro HERO3+/3(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 1/4 inch screw hole, compatible with any tripod Can mount UV lens, filter lens, polarizing lens of diameter 37mm Size : 7.4*5.8*4cm Weight: 99g