Key: BbBore: .590-inchBell: 11-1/4-inchBell Material: Yellow BrassBell Position: UprightValves: Stainless Steel PistonNumber of Valves: 4Valve Position: Traditional 3 Top + 1 SideSystem: CompensatingFeatures: Compensating Valve System; Main Tuning Slide Trigger with Snap-On Ball Quick Release System; Bottom Sprung Stainless Steel Piston ValvesCase: YesMouthpiece: YesMouthpiece Shank: LargeFinish: Lacquer, Silver