Bach / Small Shank Trombone Mouthpiece (Small shank for trombone, baritone, and euphonium) Standard Mouthpiece It is the most widely used tool around the world by professionals and beginners alike. Poor instruments can be leveled up and good instruments can become even better. It has a rich volume, excellent intonation, good response from high to low notes, a rich resonance and consistent sound particles across the entire range, and moderate resistance to prevent fatigue.・6 1/2AL Inner diameter / 25.40 mm The rim and cup are the same shape as the 6 1/2A, but with a larger G throat (6.63mm) and a #420 (darker) backbore, it is suitable for players seeking a Teutonic (German) tone. It has a powerful yet calm and rounded sound, and is also suitable for euphonium players looking for a tone that carries far. *This product may need to be ordered. If the importer has the item in stock, we can usually deliver it to you within 3-4 days. If the importer does not have the item in stock, we may place an order with the manufacturer in the country of origin. It may take a few months. Please contact us for detailed stock status and delivery information.