Small shank mouthpiece. Formerly a custom-order model now a standard due to popular demand. 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 smallbore, alto trombone or even small shank euphonium. • 25.50mm rim • Deep cup • 0.276" throat • 429 backbore. • Gold plated