willie's Custom Brass Willie's Trombone Mouthpiece Walküre HY Series Large Tenor GP Finish (4S)

The next-generation standard that lets you fully enjoy the German-style tone and sharpness. Supervisor: Hideki Yamashita (Kyushu Symphony Orchestra) GP finish, rim diameter 26.00 (mm), throat diameter 6.80 (mm), similar to other companies' sizes: back 4G