Conn 88HYCL Professional Tenor Trombone [Yellow Brass Bell/CL2000 Rotor]

Symphony, .547" (13.89mm) bore with patented CL2000 F rotor system, open wrap .562" (14.27mm) bore through F attachment, 8-1/2" (216mm) yellow brass bell, rose brass outer slide, lacquer finish, C.G. Conn mouthpiece, 7521L woodshell case. CL2000 rotor system provides 40% faster action & virtually eliminates any difference between the F attachment & straight trombone sides.