The Antoine Courtois AC260BO Performance Series F-Attachment Trombone is a great choice for the advancing student looking for a trombone with the step-up features of a slightly larger bore and F-Attachment. The Courtois AC260BO features a .525″ medium bore combined with an open-wrap F-Attachment with miniball linkage. The adjustable thumb trigger allows the player to use the F-attachment with comfort, while the nickel hand slide allows quick action. The Courtois AC260BO Performance F-Attachment trombone includes a case and mouthpiece and is available in lacquer finish. Reviews There are no reviews yet. Be the first to review “Antoine Courtois Paris AC260 Performance Series F-Attachment Trombone Lacquer Yellow Brass Bell” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.