I recently bought the DJI Osmo Action 6 camera to use on our adventures. For hiking and being around water, I really wanted a CPL (polarizer) filter. Most of my photo situations (usually landscapes) are greatly improved when I use a CPL filter. In the past, I've only lightly used ND (neutral density) filters, but I wanted to have them for the Action 6 so I could capture more landscape varieties - especially with our upcoming trips this year to the Virgin Islands in the Spring and to South Africa/Botswana in the Fall.Anyway, this is a very nice filter set!The CPL has a nice and smooth rotation ring. It's easy enough to grab the rotator ring with my bare hands. It is rather tiny, so I wonder if it would be difficult to grab the ring vs the entire filter with gloves on. You can see the width of the ring in the photo I included that shows the CPL filter on my Action 6 camera. The ring is the part that has the small white line on it.Speaking of the CPL's white line.. It's good there is a line, but I think it would be more helpful to have more lines (of differing colors or something to tell them apart) to make it easier to set up the CPL consistently on location. One line helps, though.I was wondering if adding these snap-on filters would make my camera a bit too large to fit in my waterproof case. But, nope, it fits perfectly in my case with the filter in place. You can see that in the picture I included.One thing I worry about with a snap-on filter is if it will loosen and fall off over time. The first time I attached the various filters to my lens, they had excellent tightness. However, after putting them on and off several times, I noticed they are less snug than they were. I hope they won't continue to loosen as I use these filters.Of course, the trade-off is that, unlike a screw-on filter, you don't need to remove the lens cover from your Action 6 camera. I would worry about getting dust on my lens if I removed the outside lens protection to add a filter. So for now, I will continue to use the snap-on filters because that seems much safer than a screw-on.One other thing to note... the filters came in a nice protective case. The only issue is that it is a very large case. You can see the case in the picture I uploaded. I wish they had a smaller case that would be more travel-friendly. As is, I'll be looking for a smaller travel case to take these filters with me on our trips.cheers,c~