These Camera Butter ND filters are made for the Hero 9, Hero 10, Hero 11, Hero Mini 11, Black Bones, 12 cameras. These filters twist on (or screw on) and off without tools, replacing the clear lens covering on the camera while maintaining the waterproof seal. These premium filters use high-quality Black Diamond glass - the best in the business!Choose a Filter:ND4ND8ND16ND32ND64VIDEO: Camera Butter Hero 9 ND filterFeaturesNano-Coated to reduce glare, and repel water, oil, and fingerprints.Anodized Aluminum2mm Gorilla GlassCarrying CaseTwist-OnSpecificationsCompatible with: Hero 9, Hero 10, Hero 11, Hero Mini 11, Black Bones, or 12 cameras. Filter Strength: Choose ND4, ND8, ND16, ND32, or ND64INSTALLATION INSTRUCTIONSRemove the existing lens/cover by twisting 90 degrees parallel with the camera. Pulling away from the camera slightly may help.Place the Camera Butter ND filter on the camera with the metal bars on the filter oriented horizontallyWhile pushing down towards the camera, twist the filter 90 degrees until it is square on the .Make sure that the filter is seated correctly and is flush with the camera. If it is crooked or can be removed easily, remove and reinstall.Recommended (Not Included) (Insert recommended products here. Example: "Battery: Lumenier 10000mAh 6s 25c Lipo Battery")Links (Insert links such as manuals, firmware, etc)Includes1x Camera Butter Twist-On ND Filter (Choose Filter Strength)1x Carrying Case