**All brass items are NON-RETURNABLE**
Please Note: This cup requires a screw rim to be a complete mouthpiece.
The San Francisco Model is used by the horn section of the San Francisco Symphony and is based on the time-tested, bowl-shaped cup design that has been found to be most compatible with Geyer-style horns. Its design can be traced back to mouthpieces made by Carl Geyer himself and offers quick response and evenness throughout all registers. It provides a rich, complex tone in lower dynamics and plenty of brilliance and projection when played loudly. This allows the player access to a wide variety of tone color possibilities without sacrificing response and flexibility.
Giardinelli threads are standard.