The Miraphone Tuba Mouthpiece Series was designed to offer the player a mouthpiece for a great sound with less effort. <br /> <br />The Miraphone tuba mouthpieces are often copied but rarely matched. Their designs get a great sound out of the horn, often with less work. The most famous of these is the spectacular C4. All silver plated except as indicated.TU03 F/Eb Tuba (1-M): Deep, 1.433" Cup Depth, 0.276" Bore, 1.161" Cup Diameter, Silver Finish <br />TU05 F/Eb Tuba (C-5): Very Deep, 1.681" Cup Depth, 0.323" Bore, 1.220" Cup Diameter, Silver Finish <br />TU07 F/Eb Tuba (7-M) Shallow, 1.575" Cup Depth, 0.299" Bore, 1.240" Cup Diameter, Silver Finish <br />TU09 F Tuba (C-2): Deep, 1.752" Cup Depth, 0.323" Bore, 1.248" Cup Diameter, Silver Finish <br />TU11 F Tuba Helleberg (C-7): Medium, 1.354" Cup Depth, 0.276" Bore, 1.260" Cup Diameter, Silver Finish <br />TU13 F Tuba Winston Morris (C-8): Shallow, 1.433" Cup Depth, 0295" Bore, 1.260" Cup Diameter, Silver Finish <br />TU15 BBb/CC Tuba (2-M): Deep, 1.492" Cup Depth, 0.295" Bore, 1.240" Cup Diameter, Silver Finish <br />TU17 BBb/CC Tuba (3-M): Deep, 1.614" Cup Depth, 0.315" Bore, 1.240" Cup Diameter, Silver Finish <br />TU19 BBb Tuba (8-M): Deep, 1.768" Cup Depth, 0.323" Bore, 1.260" Cup Diameter, Silver Finish <br />TU21 BBb/CC Tuba (C-3): Deep, 1.618" Cup Depth, 0.315" Bore, 1.264" Cup Diameter, Silver Finish <br />TU23 BBb/CC Tuba (C-4): Deep, 1.453" Cup Depth, 0.295" Bore, 1.280" Cup Diameter, Silver Finish <br />TU25 Rose Orchestra (C-9): Very Deep, 1.799" Cup Depth, 0.323" Bore, 1.287" Cup Diameter, Silver Finish <br />TU26: Deep, 1.614" Cup Depth, 0.323" Bore, 1.295" Cup Diameter, Stainless Steel <br />TU27 (C-10): Shallow, 1.492" Cup Depth, 0.323" Bore, 1.299" Cup Diameter, Silver Finish <br />TU29 BBb/CC Tuba (5-M): Very Deep, 1.736" Cup Depth, 0.323" Bore, 1.299" Cup Diameter, Silver Finish <br />TU31 BBb/CC Helleberg (C-6): Deep, 1.665" Cup Depth, 0.327" Bore, 1.299" Cup Diameter, Silver Finish <br />TU33 BBb Tuba (9-M): Very Deep, 1.768" Cup Depth, 0.331" Bore, 1.319" Cup Diameter, Silver Finish <br />TU39: Very Deep, 1.803" Cup Depth, 0.339" Bore, 1.260" Cup Diameter, Gold Finish <br />TU41 Theinert Orch: Very Deep, 1.772" Cup Depth, 0.354" Bore, 1.299" Cup Diameter, Gold Finish <br />TU42 Theinert Orch: Very Deep, 1.772" Cup Depth, 0.354" Bore, 1.299" Cup Diameter, Silver Finish <br />