This is a self-made C-key kena, tuned to a Doremifasolasido scale, crafted from Karatake bamboo. It's tuned to approximately A=442Hz. - Size: Total length 27.5cm, embouchure inner diameter approx. 19mm, wall thickness 3mm, largest finger hole diameter 9.5mm, embouchure width 10mm, embouchure depth 7.5mm - Surface finish: Lightly coated with camellia oil - Weight: 42g The sound produced when all holes (6 on the front + 1 on the back) are covered is "Do," and the sound when all holes are open is "Do" an octave higher. The finger holes are small, and it's lightweight and short, making it easy for elementary school students to handle. Instant purchase is welcome.