J W Pepper and Son Tuba Mouthpiece Tag #: M201434 Length Inner Rim Diameter Throat Diameter Cup Depth Shank End Diameter 3.620″ 1.130″ .316″ 1.08″ .484″ Comments: “JW PEPPER & SON. PHILA.″ text on side if shank. Share this:TwitterFacebookLike Loading...