Used Tuba Exchange TE-690L BBb 3/4 Tuba -Key: Bb -Bore: 0.670” (17mm) -Bell: 14.5” (368mm) -Finish: Lacquer -Leadpipe: Nickel Silver -Size: ¾ -Valves: 4 Piston -Height: 33” (83.5cm) -Weight: 16 lbs (7.25kg) -Case: Included The TE-690L is a very compact 3/4, 4 piston BBb tuba in lacquer finish, with a 14.5" bell and rose mouthpipe. It has a surprisingly big sound for such a physically small tuba. Good things come in small packages sometimes, even with tubas!