Those adapters look like something would get broken off in short order....o m g
I've been using them for a decade, first on my Buzz VV mods, and for the last handful of years they're on pretty much anything.
They're pretty solid little items, just a chunk of metal with threading and the insulator on the positive. They've survived multi-foot drops on concrete, getting run over,...
I use them across the board because I generally like to use a lanyard, and it gives me something for the metal ring to go around. I have thin metal rings (I believe from fasttech) that go around the 510 adapter, then SS split rings from Amazon attach to that, with the lanyard string also going through the split ring).
I have 4, three sealed and one in use. I don't have the variety of colors you have, just 2 black and 2 yellow. They are really good mods.
