The Tempest Agility Winds Silver Mellophone is built to be heard and noticed. Beautifully Silver Plated, it comes with 3 Fast Moving Piston Valves. The strong bracing will make it last for many marching seasons. The Tempest Mellophone is wonderfully balanced to easily be played in any marching situation. It has a bore of .468” bore and a 10 1/2-inch bell. It includes a case, 2 mouthpieces, and a Trumpet/French Horn mouthpiece adapter. It also comes with a 5-Year Warranty.