58mm Glass Filter Kit (4 pcs)This glass filter kit consists of the 3 most popular filters for use above and below water, along with a 58mm adapter ring that will allow you to mount these filters on the standard or dive housing of your Hero3 3+ 4 camera. Also includes a storage pouch to keep your filters clean and organized. Best bang for the buck, you will not find a glass filter kit at a lower price! 4 Parts Included: Red filter for diving in tropical sea waters Magenta filter