Bob Reeves 43 / C2J mouthpiece for trumpet, rim number 43, cup diameter 43/64", silver plated. The mouthpiece allows trumpet players to get a dark, warm flugelhorn sound on a trumpet without sacrificing intonation, range, or endurance. The C2J has been used by orchestra players to execute the extreme soft passages in the repertoire and passages that require a dark sound (Mahler, Symphonies #3 and 9, for example). It is also optimal for church settings where a warm chorale type sound is desired. Jazz players use the C2J to get a flugel sound when soloing and when playing ballads. Some find it convenient not having to switch to a cold horn, or even carry a flugel to a gig just to play one ballad.