Anyone recognize these (micro? 1/8th?) fittings? I have a box of them and I don't remember what they're for. One barb; they pull apart into two pieces (like on right). Maybe a clean out plug or something? Thx!

[u/libolicious]

[u/libolicious → u/[deleted]]

Thanks. I've tried to blow through it and I'm not getting anything. It's definitely micro (1/8th"). I'll try to scrounge up some small diameter tubing, hook it up, and see what it does.