We've packaged together the seven most commonly used harmonica keys (A, Bb, C, D, E, F, and G) and a Seven Key travel case. Measuring just 12 in. x 6 in. makes this case the most convenient way to carry your favorite diatonic harmonicas. Knowing that there are only seven “most common” keys used by professional players (G, A, Bb, C, D, E, & F) this case is custom made to hold seven harmonicas. Made from rugged cordura and using a high quality zipper, this case is a great value. Buy them together and save! Internationally recognized by players for its simple beauty and resonant tone, this is the most famous harmonica in the world. The pearwood body, solid brass plates and patented cover design produce a musical quality that, when first heard in 1896, brought the Marine Band immediate popularity. This is the model that helped to create the sound of the Blues, Country, Folk and Rock. Specifications: 10 single holes, 20 reeds, length: 4 inches.