This is the traditional shape of a Denis Wick mouthpiece. The "Classic Series" features a flat rim and a unique V-cup shape, allowing for a round and deep tone. It is highly favored by trombone and euphonium players in British-style brass bands. Gold-plated finish For large bore [6BL] Rim inner diameter: 25.40mm Rim width: 6.26mm Bore size: 6.66mm It is well-balanced across all registers, with a伸びのある (nobin-no-aru -伸びのある) sound, especially in the high register. It combines transparency and power.