The Camera Butter filters twist on and off without tools, taking the place of the default lens covering on the Hero 9 while maintaining all the the qualities we expect out of a GoPro.
These filters are extremely strong! Made from 2mm thick Corning Gorilla glass and anodized aluminum, these are the strongest ND filters in the world.
The glass is nano coated to reduce glare, repel water, oil and to make fingerprints easy to wipe off.