BBb, 4 front action valves, .687" (17.45mm) bore, 20" (508mm) upright bell,
hand-adjustable 1st valve slide, lacquer finish, 18 mouthpiece. With
hardshell case. A full-size tuba with a centered, rich tone. Front
action valves and an easy to reach 1st valve slide allow for fine tuning during
performance. Full warranty.