Stems for limited space

[Veloo]

Has anyone tried these space saving stems that turn and lock 90 degrees? I've seen another but can't remember the name.

Wondering how robust they are.

https://www.ixow.com/en/e-shop/stempark-casual/

[Alaska Mike]

I’d rather get one of the locking spacers and remove the stem. Seems overly complicated to me.