Key of Bb. .547" bore with patented CL2000 F rotor system, open wrap, .562" bore through F attachment, 8-1/2" rose brass bell and outer slide, lacquer finish. Comes with Conn mouthpiece and woodshell case. The CL2000 rotor system provides 40% faster action and virtually eliminates any response difference between the F attachment and straight trombone sides.
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