Melton 45-L Seni F-Tuba, F-Tuba, Special model ""Seni, 6/4 size, 5 Cylinder valves (4+1), Bore: 18.5 mm (4th valve: 19.5 mm), 3B linkage system, Trigger on 2nd valve train, Bell Ø 38 cm, Height: 99 cm, Brass, One-piece gold brass leadpipe, Clear lacquer finish, Includes gig bag and mouthpiece