The Bach BTB411 Trombone from Conn-Selmer is an intermediate level instrument designed to develop and enhance the demanding skillsets required of today's young players. This step-up instrument is an ideal choice for players seeking the characteristics of a professional large bore F attachment trombone. Made with an 8-1/2" two-piece yellow brass bell and finished off with a soldered bead, the BTB411 delivers extremely responsive projection with a colorful and broad sound.