Yamaha YFH-631GS Professional Flugelhorn in Silver Yamaha YFH-631GS Professional Flugelhorn Bright Silver Finish -- Key of Bb -- .433" Bore -- 6" Gold Brass Bell Monel Valves -- 3rd Valve Slide Trigger -- Movable Mouthpiece Receiver Vertical Valve Tubing -- Hand-Lapped Valves & Slides Includes Deluxe Case & Mouthpiece