Bach / Large Shank Trombone Mouthpiece (Large shank for trombone (large bore), bass trombone (large bore), baritone (large bore), and euphonium (large bore)) 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.・3G Inner diameter / 26.26 mm It has the same cup and rim size as the No. 3 for small bore tenor trombones, but has a deeper bass trombone cup and a larger throat and backbore. Low range that resonates well even with pedal tones. *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.