Bach Large Shank Trombone / Baritone Mouthpiece 6-1/2AL

Large shank mouthpiece with an identical rim and cup to the large shank 6.5A, but with a slightly smaller bore (0.261 vs. 0.276 inch).

•  25.4mm diameter rim
•  Medium-deep cup
•  0.261" throat
•  420 backbore