Like the 51D, the large "D" cup makes this mouthpiece ideal for symphonic trombone playing. Also a good choice for the Euphonium player requiring a larger diameter than the 51D, - the manufacturer
Features: • 25.78mm cup diameter • 6.35mm (1/4" or 0.25") throat • Medium-deep "D" cup • Standard #3 rim • Standard backbore • Standard Bach/Morse taper large shank • Silver plated
California Residents Only: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov