Hans Hoyer 6801NSA-L, Heritage F/Bb Double Horn, Conical rotary valves with 3B ball bearing linkage, 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, Nickel silver leadpipe, Three-dimensional adjustable finger hook, Adjustable thumb lever, Engraved valve cover, High quality lacquer finish, Detachable bell, Made completely from nickel silver, Coated with a clear layer of lacquer, Incl. Mouthpiece and case, Made in Germany