The Denis Wick 3BFL Flugelhorn 5884 mouthpiece has a cup diameter of 16.75mm, the bore is 4.6mm. This mouthpiece has a medium-depth cup. This mouthpiece is super for all-around use. The nice soft tone, as well as a good response over the entire register, speak for the Denis Wick 3BFL 5884 flugelhorn mouthpiece. The shank is suitable for American and Japanese flugelhorns. The soft sound of the D. Wick flugelhorn mouthpieces is popular all over the world. Whether in a jazz combo, symphony, or brass band, amateur and professional musicians alike enjoy the soft, warm sound and response of Denis Wick mouthpieces.