My Dynavap stems, especially my Simrells, all need the gentle touch of unfrosted adapters, so this helps a lot--
I've seen Simrells beat up by frosted glass, so any collectors need this adapter (or one for each rig if you're extravagant). I don't really want to scratch my Dovetail and Futo stems either--it took some time to collect, so I want to baby them a bit.

It fits perfect for use the wanda cups into miniRig 👌🏼💨

Now I can use my Simrell stems with water pieces without scratching them up.. 👍🏼

fits perfect! unlike my china glass adapter