Bach Trombone Mouthpiece Small Shank 6.5AL 3506HAL

6-1/2AL / Medium deep / 25.40 mm / Medium wide, well rounded. / The same rim and cup as No. 6-1/2A, but with a larger "G" throat and #420 backbore for trombonists who strive for a Teutonic tone quality. Recommended for euphonium players who desire a round, mellow tone of great carrying power and substantial volume.