Mouthpiece Sizing Key
Profile: Outer shape of the mouthpiece.
Number: The lower the number, the bigger the diameter.
Letters: Refer to cup or shank sizes
No letter is our standard deep cup. B is for a medium deep cup. S refers to "shallow".
F notates a European or medium shank that will fit European horns
FL notates a shank that will fit USA and Japanese model flugelhorns
Open (free blowing, barrel shaped)
V-Type (V shaped and very projecting