Key of F/Bb, .472" bore, 12-1/8" detachable yellow brass bell, medium bell throat, gold brass mouthpipe, 4 solid rotary valves, adjustable 4th rotor thumb rest, nickel silver inner and outer slides, water key. Clear epoxy lacquer finish provides easy maintenance and scratch and corrosion resistance. Includes case, rotor oil, and mouthpiece. All Yamaha wind instruments come with a limited 5-year warranty.