Diving Filter Kit for GoPro Hero 6 / 5 Black - 3 Filters - Frame – CamKix
Amazon.com : SOONSUN 4-Pack Lens Filter CPL ND8 ND16 ND32 Filter for GoPro Hero 5 6 7 Black, Neutral Density and Circular Polarizing Lens Filter Kit Lens Protector for GoPro Hero 5 6 7 Black Camera : Electronics
NEEWER 6 Pack ND Filter Set For GoPro Hero 11/10/9 – neewer.com
Diving Filter Kit for GoPro Hero 6 / 5 Black - 3 Filters - Frame – CamKix
Amazon.com : Waterproof Case for Gopro Hero 7 Hero 6 Hero 5 Hero 2018 Black Accessories, Housing Case Protective Shell with Anti Fog Inserts and Filter Kit Suitable for Underwater Diving Photography 45M : Electronics
Polarizer/ND Filters for GoPro HERO6/5 Black | PolarPro Venture 3-Pack
Amazon.com : Underwater Camera Dive Filters for GoPro Hero 5, 6 and 7 Black Super Suit Waterproof Housing Case in Red, Light Red, and Magenta, Professional Color Correcting Photography Accessory : Electronics
SANDMARC Aqua Dive Filter for GoPro Hero 7, 6, 5 - Red, Magenta & Yellow Set