YFB-621 F Tubas

YFB-621 YFB-621S
Key F F
Body Yellow brass Yellow brass
Bell Diameter 366mm (14 3/8") 366mm (14 3/8")
Bore Size 17.5-18.5mm (0.689-0.728") 17.5-18.5mm (0.689-0.728")
Height 825mm 825mm
Valves 4 front pistons + 1 rotary 4 front pistons + 1 rotary
Finish Clear lacquer Silver-plated
Mouthpiece BB-67B4 BB-67B4
Case Included Included