Key: BbBore: .570-inchBell: 10.8-inch DetachableBell Material: Yellow BrassBell Position: Bell FrontValves: Stainless Steel PistonsNumber of Valves: 3Valve Position: FrontSystem: Non-CompensatingFeatures: Detachable Bell; Removable Valve Section for Easy MaintenanceCase: ABS Molded CaseMouthpiece: YesMouthpiece Shank: SmallFinish: Lacquer, Silver