This model fits a detachable bell tenor trombone and a detachable bell bass trombone. It fits bell sizes up to 10.5 inches. The slides are stowed in the side compartment and a foam partition separates the instrument bodies. There is space for accessoriesinside or in the exterior detachable sheet music bag. A trombone stand can be attached to the sheet music bag. The wheels help during transportation. Features include: • Fiberglass shell • Replaceable nylon cover • Adjustable foam blocks for perfect fitment • Wheels • 2 handles • Music pouch w/stand straps • 2 backpack straps • Mouthpiece pouch for three mouthpieces • Leadpipe pouch for 2 leadpipes • Identification tag