- Willson 3200 RZ-5 F-Tuba, 5 rotor valves (4+1), Rotax valve rotors with 100 % geometrical volume, bore 18,50 mm, 4th valve bore 19,50 mm, 5th valve bore 20,50 mm, brass body, Ø 450mm brass bell, height 940 mm, weight 9,30 kg, one piece bell, new water key system does not disrupt the air flow, clear lacquered, without case EUR 11690.00 - See more - Buy online