Marcinkiewicz 24 AW Mouthpiece for Tuba, outside cup diameter 49,66 mm (1,955 in.), inside cup diameter 32,54 mm (1,281 in.), cup depth 42,09 mm (1,657 in.), drill venturi 8,84 mm (0,348 in.), length 96,52 mm (3,800 in.), silver plated