Small shank mouthpiece. Similar to a 5G except that the cup is not as deep. This model is a good choice for those playing a 5G (or equivalent) on their large bore tenors who wish to maintain the same rim feel when switching to their small bore, alto trombone or even small shank euphonium. The slightly shallower cup gives a brighter tone, and is a good choice for alto or big band work. • 25.50mm rim • Medium-deep cup. • Medium-wide, semi-flat rim. • Gold plated