Seen them in aluminum, but not brass or stainless.
https://www.amazon.com/Cru5h-Billiards-Portable-Aluminum-Moosehead/dp/B0DTNCLVH7?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A2LW76KSGDF85B
Never said I liked them best.
Thought I would mention them, have read nothing but good on them right here by those who's opinion I trust.
I'm not into that as noted by my sig line