The C.G. Conn 6D is an excellent choice for students who are ready to move up to their first double horn. The small throat bell and unique wrap make this a very responsive horn that is well suited for players at a variety of ages and skill levels. Specifications: C.G. Conn "Artist" - Key of F/Bb, .468" bore, 12" small throat yellow brass bell, yellow brass mouthpipe, branches and slide crooks, nickel silver outside tubes, tapered rotors and bearings, all string linkages, clear lacquer finish, C.G. Conn 2 mouthpiece, 7613C plastic shell case.