Features Compact size4 piston valves.630" bore15" upright yellow brass bellIncludes case and mouthpiece Description Product Description The Allora AATU-105P 4-Valve 3/4 BBb Tuba is priced right and has a great sound. Designed for a quick response, it works well for both middle and high school ensembles from full band to small group work. The AATU-105P features four front piston valves with a .630-inch bore and nickel leadpipe design for easy, vibrant tone production. Thought it has a compact 3/4 size build, the Allora AATU-105P is equipped with a 15' upright bell that provides excellent resonance and projection. Includes a case with wheels and mouthpiece.The Allora line of instruments was developed to offer the student musician an excellent start to their music career, at prices that parents can afford. Allora instruments meet exacting standards for intonation, comfort, and mechanical reliability and are an ideal alternative to renting.