B00145CG84 Yamaha YAC BOBOSOLO-REP Replica Series Roger Bobo Solo Tuba Mouthpiece

32.2mm inner rim diameter, with semi-flat rim contour; 7.5mm throat
Standard rim thickness, semi-shallow cup depth; standard backbore
Features a clear and focused tone that sings and projects
Especially suitable for solo performances
Pairs well with F and Eb tubas