UMI 7 Tuba Mouthpiece Tag #: M201405 Length Inner Rim Diameter Throat Diameter Cup Depth Shank End Diameter 3.900″ 1.335″ .331″ 1.27″ .522″ Comments: “UMI 7” text on side. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading...