TromboneChat

Can somebody tell me the inner rim diameter of the Shires 11C Vintage and the 11C USA?
Whats the different between both?
Thanks

No exact measurements, but gives an impression.
https://www.trombonechat.com/viewtopic. ... 10#p193510

I would estimate it as 25.2mm, based on the measurements of the countless mouthpieces I’ve had.

Great design. *Maybe* a little tight for those who play with a lot of air.

I had one (USA). It seems like 5g rim with shallow cup (like 7C Bach).