Key: CCSize: 4/4Bore: .748-inch (19mm)Bell: 19-inch (483mm)Bell Material: Yellow BrassBell Position: UprightNumber of Valves: 5Valve Position: FrontValve Type: 4 Piston and 1 RotaryValve Material: Stainless Steel Piston; Brass RotaryFeatures: Newly Re-designed Rotary Valve Access for Easy MaintenanceCase: Case with WheelsMouthpiece: YesFinish: Lacquer, Silver