The Denis Wick 2BFL Flugelhorn 5884 mouthpiece has a cup diameter of 17.00mm, the bore is 4.6mm. This mouthpiece has a medium depth cup. If you need a large cup and don't want to miss out on a slight treble on your flugelhorn, the 2BFL 5884 flugelhorn mouthpiece is the perfect choice. The shank is suitable for American and Japanese flugelhorns. The soft sound of the D. Wick flugelhorn mouthpieces are popular all over the world. Whether in a jazz combo, symphony orchestra or brass band, amateur and professional musicians alike enjoy the soft, warm sound and good response of Denis Wick mouthpieces.