All B&S Challenger professional piston valve cornets are equipped with boxed springs, monel pistons, handhammered one piece bell, nickel silver outer slides.
Key : Bb
Bore : .467"
Bell : 4.921" gold brass
Valves : 3 top-sprung hand-lapped Monel pistons
Water keys : 2 lever-style, forged (main tuning and 3rd valve slide)
Finish : Silver Plating
Case : Hard wood-shell
Accessories : Mouthpiece, valve oil, slide grease, cleaning cloth and rod
Features : Shepherd's Crook, adjustable rod stop on 3rd valve slide, dual mouthpiece receiver