Chief 9 Tuba Mouthpiece Tag #: M201408 Length Inner Rim Diameter Throat Diameter Cup Depth Shank End Diameter 3.830″ 1.335″ .352″ 1.71″ .522″ Comments: “CHIEF” text on one side. “9” underlined upside down on opposite side. Share this:TwitterFacebookLike this:Like Loading...