Clear filter replacement packs of 5, 10 or 20 allow the active GoPro Hero3 user to use and abuse their GoPro filters without the need to repurchase a full kit. These offer an inexpensive way to protect the front element of your GoPro camera housing and your other Formatt-Hitech filters. These filters will only work with the Formatt-Hitech GoPro Hero3 holder. Clear filters offer an inexpensive way to protect the front element of your GoPro Hero3 and Hero3+/Hero4 camera housing and you’re other Formatt-Hitech filters. Formatt-Hitech’s GoPro holder system typically holds two filters. Each kit is supplied with a clear protector and these are available as inexpensive replacements.