The Gen 2 31D tuba mouthpiece is slightly smaller than a PT50 or PT88. Wedge D mouthpieces have a deep bowl shaped cup similar to PT50 and PT88 mouthpieces. The 31D produces a huge sound with a very even response in all registers.
Wedge Gen 2 mouthpieces have a second generation Wedge design that incorporates elements from our highly successful Gen 2 high brass rim. They have an accentuated oval rim shape that extends right down to the base of the cup. This unique oval cup shape amplifies the effect of the Wedge rim, providing greater responsiveness and more core to the sound compared to a conventional round cup of similar depth and volume.
ID: 1.31 inches at .05 inches into the cup (33.27 mm)
OD: 1.91 inches (48.51 mm)
Throat: .325 inches (8.26 mm)