Yamaha Tuba/Sousa YAC-BB67C4 Mouthpiece
Yamaha Standard Series Tuba/Sousaphone mouthpieces. Features unmatched precision, smooth attack, secure control and easy playability. They have the ideal weight for all-around usage.
YAC-BB67C4: 32.06mm inner diameter, semi flat rim, semi shallow cup depth. Large inner rim diameter with a shallow cup. Easy playability with a bright tone.