D'Addario Select Jazz alto saxophone mouthpiece, D5M. This mouthpiece achieves the best tone and responsiveness through a fusion of legendary vintage mouthpiece designs and modern production techniques using fully automated machinery. Professionally designed and manufactured in the USA by a team of top players and engineers. It is precision-machined from hard rubber and offers exceptional versatility for all jazz styles. It shows signs of use, but intonation is good and it can be used without any problems.