Detail 01
0.547-inch bore
This is the listed bore size for the instrument.

Independent shopping perspective
Courtois’ AC280BO Performance Series trombone pairs a .547-inch bore with an open-wrap F-attachment for an advancing player ready to use that setup. The adjustable thumb trigger allows the attachment to be positioned for the player’s comfort, and miniball linkage supports its operation. A nickel handslide is specified for quick action. Finished in lacquer, the instrument comes with both a case and mouthpiece, covering the core equipment needed to put it into regular study and rehearsal use.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
This is the listed bore size for the instrument.
Detail 02
Provides the F-attachment configuration and linkage specified for this model.
Detail 03
Lets the player set the trigger position for comfort.
Detail 04
Specified for quick action.
Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. A case and mouthpiece are included.
It is positioned for advancing students seeking a medium-large-bore trombone with an F-attachment.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.