This is a homemade bamboo kena in C (Do Re Mi... scale). It is tuned to approximately A=442Hz. ・Size: Total length 27.5cm, mouthpiece inner diameter approx. 18.5mm, wall thickness 3mm, largest finger hole diameter 9.5mm, mouthpiece width 10mm, mouthpiece depth 7mm ・Surface finish: Lightly coated with camellia oil ・Weight: 38g This instrument produces a Do when all holes (6 on the front + 1 on the back) are covered, and a Do an octave higher when all holes are open. The small finger holes, light weight, and short length make it easy for elementary school students to handle. Instant purchase welcome.