This one is new and made for very small lenses.
Overall, they have some advantages, and some disadvantages also :-)
I have the set of them (not this new one), and for what it's worth, I never touch 'em. They're never exactly the right size, so you end up using the foam spacers, and then they just wobble around all over the place. I know others like them, but I find them a pain in the rear end. One solution would be to buy a bunch of these small ones and enlarge them to fit each of your lenses exactly.
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