Key of C. .459" bore; one-piece, hand-hammered, 4-7/8" yellow brass bell; one-piece drawn mouthpipe; Monel pistons; 2-piece valve casings; double main tuning slide braces; 1st valve slide thumb hook; clear epoxy lacquer finish. Includes case. FAM copy: Xeno Professional Trumpets Xeno trumpets have won a place in the world's most prestigious symphonies and among top-level concert band and jazz players. Yamaha's flagship trumpets are heavyweight instruments, made with a metal that has been specially treated to deliver more power, better control, and a richer sound. All feature hand-lapped Monel pistons and slides; 2-piece valve casings; an improved mouthpiece receiver length for better response; pressure-formed tubing that is perfectly round for a smoother air flow; metal valve guides; gold brass mouthpipe; and hand-hammered, one-piece, annealed 4-7/8" bell. The combined result of these features is a highly responsive instrument with a dark tone that does not break up with volume. All Yamaha wind instruments come with a limited 5-year warranty.