Vincent Bach mouthpieces have been a gold standard for brass players for generations. Bach produces hundreds of mouthpiece models to suit every player. Bach created the sizing method used by many mouthpiece manufacturers worldwide. I encourage you to look at the Bach Mouthpiece Manual to learn more.
Diefes Brass stocks the most popular models and will endeavour to broaden our selection over time. Let us know if you'd like to order something not in stock.