CHOOSE - YOUR CUP DIAMETER
Choose a smaller size if you need endurance.
Size feel may also vary depending on rim shape and inner rim radius.
small Bach 6-1/2 – endurance + high notes – beginner to professional
Bach 6-1/2 – endurance – beginner to professional
large Bach 6-1/2 – round sound – advanced to professional
Donat design: the larger the diameter chosen, the deeper and more voluminous the mouthpiece will be.