This is a wonderfully made sousaphone mainly in fibreglass which obviously keeps the weight right down. The valves are monel and are extremely slick. It produces a classic round tone right across its range. Any right-minded sousaphone player should have one of these! It comes with a tough hard-wearing ABS case. Bore: 18,5 mm, Bell ø: 660 mm. Outer slides -nickel silver. Body-fibreglass. Weight: 10kg, ABS Case. Key Bb.