willie's Custom Brass Willie's Trombone Mouthpiece TL BP Series Large Bore Bass GP Finish (2)

Bass trombone by Thomas Leyendecker (Berlin Philharmonic). Supervisor: Thomas Leyendecker (Berlin Philharmonic Orchestra) GP finish, rim diameter 26.95 (mm), throat diameter 7.50 (mm), similar to other companies' sizes: Back 1-3/4G The combination of 1-3/4G rim and 1-1/4G cup makes it ideal for tenor players to switch to bass trombone