The Robert Tucci RT-36 is designed to give large bore instruments a fast response. The depth of the cup establishes a strong center and the narrow rim helps with flexibility. This mouthpiece also creates a colorful, broad sound.
Specifications:
Cup: 33mm/1.3in, moderately deep
Rim: Width 7.5mm/0.295in, Medium Sharp
Bore: 8.3mm/0.33in