Key: Bb Bore: .570-inch Bell: 11-inch Bell Material: Yellow Brass Bell Position: Upright Valves: Stainless Steel Piston Number of Valves: 3 Valve Position: Top Action System: Non-Compensating Features: Removable Valve Section Case: ABS Molded Mouthpiece: Yes Mouthpiece Shank: Small Finish: Lacquer, Silver