- Concert Line - Zirnbauer machine - Bore 11.20 mm - Conical rotary valves - One-piece valve connections - One-piece valve slides - 3rd Slide trigger - Long water key on tuning slide - Exchangeable lead pipe with screw - Ø 138 mm thin-walled gold brass bell Model GL72 - Medium-wide scale - Fixture for interchangeable bell - Polished (unpainted) - Case not included EUR 4099.00 - See more - Buy online