All Hans Hoyer Custom Wagner Tubas are equipped with 4 rotary valves with 3B linkages on both ends of the connecting arms, a corrosion safe gold brass leadpipe, engraved valve caps, made of yellow or gold brass, without a case.Features: Model: 824-L 4 Rotary valves 3B linkages Gold brass leadpipe .551"/14mm bore 9.65"/245mm yellow brass bell Clear lacquer Without case