Dotzauer Parforce Horn Bb/Eb 18270, Parforce Horn, Switchable to Bb/Eb, Concert model, Valve with bronze exchange, Switching mechanism with Minibal ball joints, Water key, Completely made of gold brass, Double conical inner tuning slide, Tubes mounted on supports, Exterior dimension: 50 cm, Bell: Ø 31 mm, No wrapping, Completely polished, Diamond-hard stove enamel finish, Silver-plated mouthpiece