Brand New Bb Key Monel Valves Trombone w/ Case and Mouthpiece- Nickel Plated Finish Flawless Nickel Plated Finish Durable High Quality Brass Body, Durable Monel Pistons Key of Bb, Bore Size: 0.484, Bell Size: 8.071 Mouth Piece: included, Case: included 1 Year Warranty