The cup diameter and volume is slightly larger than the 46, producing a full, resonant tone. A mouthpiece on the smaller side especially well suited to the baritone horn or euphonium. -the manufacturer
Features: • 24.76mm cup diameter • 5.95mm (0.2344" or 15/64") throat • Semi-deep "D" cup • Standard rim • Standard backbore • Standard small shank • Silver plated
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