Tuba Mouthpiece Brass Evolution No. 4. 【No. 4】 (Comparison: Yamaha 67C4, Bach 18, Perantucci PT84, etc.) Cup Diameter: 32mm, Rim Width: 8mm. Positioned as a standard model, it provides a consistent sound from low to high registers. The thick, rounded rim makes it comfortable and easy to play. The cup is a medium-depth U-cup. Suggested Retail Price: ¥24,200 (tax included) It responds very well and is recommended for players who are new to the tuba. This mouthpiece has a mark on the rim where the mouth touches, so the price has been reduced. This is a used item, so no claims or returns are accepted.