willie's Custom Brass Willie's Trombone Mouthpiece POLARIS Series POLARIS Large Bore Bass SP Finish (3G)

European type mouthpiece. More detailed sound. Supervisor: Toshihiro Shirahama (Associate Professor, Kurashiki Sakuyo University) SP finish Rim diameter 26.10 (mm) Throat diameter 7.00 (mm) Approximate size of other companies: Back 3G