This is a C-tuned kena made of female bamboo, tuned to approximately A=442Hz. ・Size: Total length 27.9cm, mouthpiece inner diameter 17.5-18mm, wall thickness 3mm, largest finger hole diameter 9.5mm, mouthpiece width 10mm, mouthpiece depth 7mm ・Surface finish: Lightly coated with camellia oil ・Weight: 29g 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 it is lightweight and short, making it easy for elementary school students to handle. There are small splinter marks on 3 of the front holes. They have been smoothed and do not affect fingering at all. Instant purchase is welcome.