Miraphone Tuba Mouthpiece TU25 Rose Orchestra Silver TU03 F/Eb Tuba (1-M): Deep, 1.433" Cup Depth, 0.276" Bore, 1.161" Cup Diameter, Silver Finish 1.752" Cup Depth, 0.323" Bore, 1.248" Cup Diameter, Silver Finish TU11 F Tuba Helleberg (C-7): Medium, 1.354" Cup Depth, 0.276" Bore, 1.260" Cup Diameter, Silver Finish TU13 F Tuba Winst