D'Addario Select Jazz Alto Saxophone Mouthpiece, D7M 100% precision-milled, vintage-inspired jazz mouthpieces The Select Jazz line is milled not molded, from solid rod rubber, using DAddarios precise computer-controlled mouthpiece-making technology Classic sound and response, with even intonation across the entire range of the saxophone Features medium chambers and facing lengths Available in three tip openings: 5, 6, and 7