If the videos from your GoPro HERO camera seem to be fuzzy, check the lens on the protective housing. These lenses are made of glass for strength (it takes a fair amount of force to scratch one), but they are intended to be disposable protection.
This kit includes two new protective glass lenses for the HERO HD or HERO2 housing, two replacement gaskets, and 6 mounting screws (enough to replace the lens and all associated hardware twice). You even get the required screwdriver!
Works with all wide-lens GoPro HERO cameras with round lenses including HERO Wide, HERO HD, and HERO2. Not for square-lens cameras such as HERO3.