Bamboo Flute Set (Item Code: FLCS) Set of13, six-hole cross blown bamboo flutes of Middle High Pitch. Manufactured by the Nabi sons International Flute Manufacturer of India. Flutes Lengths are approximately 17 inches (435mm) to 9 inches (228mm) with varying chromatic notes. Top 3 holes covered will produce C# to C#. Not covering any holes will produce G# to G#.