Key: BbBore: .610-.638-inch Graduated BoreBell: 11.5-inchBell Material: Yellow BrassBell Position: UprightValves: Stainless Steel PistonNumber of Valves: 4Valve Position: Traditional 3 Top + 1 SideSystem: CompensatingFeatures: Ergonomic Design; Compensating Design; Gold Brass Leadpipe; Conical Graduated BoreCase: YesMouthpiece: YesMouthpiece Shank: LargeFinish: Lacquer, Silver