Bbb Tuba /Piggy/ With 4 Rotary Valves, 4/4L Size, Compact Design, Yellow Brass Finish, Bore 21.2Mm (.835""), Bell 420Mm (16.5""), Nickel-Silver Mouthpipe, Valve Casings, Bell Rim And All Trimmings, Tuning Slide Waterkey, Minibal Action, Lacquer