Martin 500 Double Bb TubaThe Martin 500 Double Bb Tuba is a superb quality Bb tuba at a very reasonable price. With precision engineering and high speed valve springs, the Martin 500 Double Bb Tuba is a very smooth instrument to play. With superb intonation and warm, smooth, even tone, this tuba is comparable with professional instruments at a much higher price. Features Brass lacquer finish Stainless steel free moving valves Inclusions High quality padded case 3 year warranty