Marcus Bonna Quad Case (Soprano & Alto Saxophones, Clarinet, Flute)This model fits 4 instruments, which are: 1 Alto saxophone 1 Soprano saxophone (detachable neck) 1 Bb Clarinet 1 Flute The case in nylon and fiberglass weighs approximately 4,2 Kg and with all instruments inside it, weighs approximately 10 kg. All instruments have their own position with all free keys. The case has attachment supports and velcro belts to make that happen. The case has a system that is adaptable for different types of instruments. The