Key: Bb Bore: .504-inch Bell: 8-3/8-inch Bell Material: Yellow Brass Bell Position: Upright Valves: Nickel-Plated Piston Number of Valves: 3 Valve Position: Top Action System: Non-Compensating Features: Gold Brass Leadpipe; Yellow Brass Valve Casings Case: YAC BHC-31 Plastic Shell Mouthpiece: SL45C2-12C Silver Plated Mouthpiece Shank: Small Finish: Silver