Double French Horn 12D Discant. 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 Bb/high F-Tuning, 468" bore (11,89 mm), Bell Ø 12 1/4" = 311 mm, A/stopping valve, CONN 7BW mouthpiece, Deluxe hard shell case, Lacquered finish.