For both professionals and students alike, this outstanding mouthpiece combines good response with superior tone quality and intonation. Like the standard 47, but with a slightly flatter number 4 rim. Combines good response with superior tone quality andintonation. - the manufacturer
Features: • 24.99mm cup diameter • 5.95mm (0.2344" or 15/64") throat • Standard "C" cup • Semi-flat #4 rim • Standard backbore • Standard Bach/Morse taper large shank • Silver plated
California Residents Only: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov