A carefully selected Bach mouthpiece can help improve a player's embouchure, attack, tonguing, and endurance. Vincent Bach was a rare combination of artist and engineer. A mechanical genius and acclaimed trumpet soloist, his instruments and mouthpieces are used today in every major studio and orchestra in the world. Bach personally designed the tools and composed the plans that continue to set the high standards for making all Bach products today. Bach 3CWFlugelhorn Mouthpiece The Bach 3CWFlugelhorn Mouthpiece is ideal for all-around use. In addition to its medium cup, this model has a #22 backbore that produces a rich, full, clear tone. The "W" in the model means it has a wide, cushion rim for more comfortable playing. Specifications Instrument: FlugelhornManufacturer Model: 3423CWSeries: StandardPlating: SilverCup Diameter: 16.3mmCup Depth: MediumRim Shape: Medium WideBore: 3.99mmBackbore: #22