B-Stock, Marcinkiewicz E9 Manny Klein signature mouthpiece for trumpet, outside cup diameter 27,23 mm (1,072 in.), inside cup diameter 17,32 mm (0,682 in.), cup depth 10,06 mm (0,396 in.), drill venturi 3,66 mm (0,144 in.), length 87,63 mm (3,450 in.), medium round rim, silver plated, comparsion only with Schilke 14A4a, B-Stock with full warranty, may have traces of use.