JK Exclusive 2A Classic Used as the main mouthpiece for about a year. Therefore, there are insertion/removal scratches on the shank, but the appearance is otherwise clean. No repair history. Rim Inner Diameter: 33.5mm Cup: Very deep Throat Diameter: 8.4mm It seems to be a V/U hybrid cup. This was ordered with the intention of using it with larger instruments such as Rudolf Meinl 5/4 and Fafner. It's a large mouthpiece, so it requires a fair amount of air, but I think you can get a lot of stability in the low register. I will lower the price at my own timing, so please refrain from negotiating. #Tuba #Tuba #Tuba