The large-throated bell and leadpipe design produce a responsive, intense baritone voice with excellent pitch center and intonation. The balance of the instrument is very centered making it easy for the player to focus on the music while on the field. Key of Bb, 10" bell, .500" (12.70mm) bore, nickel plated pistons, adjustable 3rd slide, small shank mouthpiece, silver plated finish, 5.5 lbs., heavy-duty stackable case.