Double French Horn 9D Connstellation. C.G. Conn Instruments standing for high quality american made brass instruments. The history shows the long periode of making experiences and getting better. But the main effort based on passion and love for music. Play and you will hear it. Features F/Bb-Tuning, 468" bore (11,89 mm), Medium throated bell 12 1/4" = 311 mm, All nickel silver, CONN 7BW mouthpiece, Deluxe hard shell case, Lacquered finish.