Fotodiox Pro WonderPana Go Filter Adapter Kit with 77mm Step Up Ring GoTough System for GoPro Hero3+ Slimline Housing Case Standard Filters

Simple installation of all-metal WonderPanaGo filter adapter onto GoPro waterproof case, your case remains water tight All-metal adapter screws on for a solid mount Adapter does not interfere with normal function of the camera or the case; Step-Up ring allows standard filters to fit the WonderPana Go filter system Precision made from premium-grade aluminum with anodized Flat Matte Black Finishing 24-Month Manufacturer Warranty