Extremely high quality ND filters made for the GoPro Hero 9. These filters twist on and off without tools, replacing the clear lens covering on the Hero 9, maintaining the waterproof seal.
They 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 nanocoated to reduce glare, repel water, oil and to make fingerprints easy to wipe off.
These premium quality GoPro Hero 9 ND filters are available in a Multi-pack of ND8, ND16 and ND32, or a 3-pack of 3xND8 or 3xND16 or 3xND32.
Includes a carrying case.ission (some sunlight)
I have not got a chance to use them but they seem to fit well
But telesin is a good compromise