This is a Doremifasolasido-tuned Quena in C made of madake bamboo. It is tuned to approximately A=442Hz. ・Size: Total length 27.5cm, mouthpiece inner diameter approx. 18mm, wall thickness 4.5mm, largest finger hole diameter 9.5mm, mouthpiece width 10mm, mouthpiece depth 7mm ・Surface finish: Lightly coated with camellia oil ・Weight: 67g The sound produced when all holes (6 on the front + 1 on the back) are covered is "Do," and the sound produced when all holes are open is "Do" an octave higher. The finger holes are small and the instrument is short, making it easy for elementary school students to handle. Instant purchase welcome.