I mentioned a "Hissing Lung doodad"
Sorry, that was pretty obscure.
Hsin Lung is a big manu of h-bar stems in Asia. I think they made stems for Ritchey (low end cheaper ones), Tioga, Zoom et al.

I don't know if they even made those "heads up" tall stem adapters, that go into a steerer and then a threadless stem clamps on. The adapter is what I was getting at, and I use Hsin Lung as a generic term for any cheap Asian stem, like xerox or kleenex. Mostly because I think the name is funny. Like if the stem poked a hole in you in a crash and you got pneumothorax — "hissing lung". Yes I know pneumothorax or collapsed lung doesn't usually make a hissing noise, but it can. Hey, I did say it was obscure didn't I?

Mark B