Features 1077 Key: Eb1077 Bore: .650" ( 16,52 mm )Hand-made bell in yellow brassBell diameter: 16" (408 mm )3 valves2 strap rings2 waterkeysFinishes: clear lacquer or bright silverplate Description Product Description Both the Eb and BBb models are free blowing with an ease of tone production and an even response. The mouthpipe is carefully positioned to give optimal playing comfort while the valve technology produces complete accuracy and reliability.A lightweight design makes these tubas exceptionally easy to hold and carry, with their depth and quality of tone capturing the essence of the legendary Besson sound. Besson has entered into the student model marketplace aggressively with an extremely well-run production facility, very knowledgable management, and excellent design.