Conn BBb tuba BB501B BB501B

BBb tuba BB501B BB501B, CG Conn Brass. Bore: .689 inch / .728 inch = 17.5mm / 18.5mm. Bell: ⌀. 14 3/8 inch = 366mm. Brass body. Gold brass leadpipe. Nickel silver outer slides. 4-valve front action. Stainless steel valves. Removable machine part. Adjustable thumb ring. Finish: lacquered. Original VINCENT BACH 25 mouthpiece. Lightweight molded case with wheels. Weight: approx. 7.0 kg. . .