The Jupiter JTU1110 Performance series BBb tuba is the ultimate step-up concert horn for the advancing student or local symphony performer. This full-size instrument offers a unique design for optimal sound featuring a larger bore and open wrap valve tubing, creating excellent response, intonation and a graduated .732 - .788-inch bore. The ergonomic four front-action valves are remarkably smooth with fast action, providing improved agility and playability. The JTU1110 series tuba includes a wheeled case and mouthpiece available in lacquer or silver-plate finish.