Bach Trombone Mouthpiece 5G Silver Plated Finish large (for bore)

It has the same rim shape and diameter as the No. 5 for thin tubes and the same characteristics as the 4G, but the cup diameter is slightly smaller. A popular model among euphonium players. ■Diameter: 25.5mm ■Cup depth: D (deep) ■Rim thickness: MW (medium), slightly flat rim.