Conn 52H Bb/F tenor trombone - F rotor, Artist model, 8-5/8" (219mm) rose brass bell, .525"/.547" (13.34/13.89mm) dual bore slide, lacquer finish, 6-1/2ALS tenor shank mouthpiece, woodshell case. Ideal for students making the transition to a larger orchestral trombone.; while allowing for a true lead sound in jazz ensembles.