Key: FBore: .460-inchBell: 10-1/2-inch Two-PieceBell Material: Yellow BrassValves: Monel PistonsFeatures: Length: 17-1/2-inch; Weight: 3.5 lbs.; Three Traditional Water Keys; Plastic Valve Guides; Spring-Loaded Tune-Any-Note SlideCase: Hard Shell CaseMouthpiece: Kanstul M6 MellophoneFinish: Lacquer, Silver