DENIS WICK Denis Wick Cornet Mouthpiece 3B This is a standard Denis Wick cornet mouthpiece. I used it mainly in British brass bands. It's a standard mouthpiece that's easy to get used to, whether playing solo cornet or in the back row, and produces a cornet-like tone. There are a few minor scratches, but it's in overall good condition. The cup has a rounded U-shape, designed to produce the rich, full sound of a cornet. It's a good match for short-model cornets. The catalog size is 16.75mm. The inner rim diameter is about halfway between a Bach 1-1/2 and 3. The rim is flat and slightly thick, with a soft feel on the mouth.