Small shank mouthpiece with an identical rim shape and cup depth to the small shank 6.5AL but with a slightly smaller bore (0.2283 vs. 0.261 inch). • 25.40mm diameter rim • Medium-deep cup • 0.2283" throat • Medium-wide, well rounded rim shape.
Bore size comparisons: Bach 6.5A Small Shank = 0.2283" Bach 6.5AL Small Shank = 0.261" Bach 6.5AL Large Shank = 0.261" Bach 6.5A Large Shank = 0.276"