Martin 1 Trombone Mouthpiece Tag #: M201439 Length Inner Rim Diameter Throat Diameter Cup Depth Shank End Diameter 2.950″ 0.980″ .256″ 0.66″ small shank Comments: “Martin 1″ text on side of shank. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading...