The Denis Wick 4BFL Flugelhorn 5884 mouthpiece has a cup diameter of 16.50mm, the bore is 4.6mm. This mouthpiece has a medium-depth cup and a very comfortable cup size. The 4BFL produces a lively flugelhorn sound without sacrificing an easy response. For the movement player in the big band, as well as for the brass musician on the flugelhorn, this mouthpiece is highly recommended. The shank is suitable for American and Japanese flugelhorns. The soft sound of D. Wick flugelhorn mouthpieces are 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 good response of Denis Wick mouthpieces.