Hans Hoyer 6801GA-L, F/Bb Double Horn, Conical rotary valves with 3B linkage system, Valve casings from nickel silver, Long tuning slide, Expansive sound, Inner- and outer slides from nickel silver, Bell: Ø 310 mm, Bore: 11.90 mm, Gold brass leadpipe, Three-dimensional adjustable finger hook, Adjustable thumb lever, Engraved valve cover, Coated with a high quality lacquer, Detachable bell, Body completely from brass, coated with a clear layer of lacquer, Incl. Mouthpiece and case, Made in Germany