Fotodiox WonderPana Go Standard Kit GoTough Filter Adapter System for GoPro Hero3 Standard Housing Case with 3 Filters Simple installation of all-metal Wonder Pana Go filter adapter onto GoPro waterproof case, your case remains water tight! All-metal adapter screws onto your for a solid permanent mount - crucial in a sports camera Adapter does not interfere with normal function of the camera or the case Premium glass filters screw on for a solid fit. Kit includes special screwdriver for easy installation 24-Month Manufacturer Warranty