Marcinkiewicz Tuba Exchange Tolbert Model Tuba Mouthpiece Tag #: M201430 Length Inner Rim Diameter Throat Diameter Cup Depth Shank End Diameter 3.805″ 1.300″ .328″ 1.45″ .534″ Comments: “THE TUBA EXCHANGE * MARCINKEWICZ CO. U.S.A.″ text on side of cup. ” * TOLBERT MODEL LS” text wrapping around shank. Share this:TwitterFacebookLike Loading...