This is a C-tuned kena made of madake bamboo, tuned to approximately A=442Hz. ・Size: Total length 28.0cm, mouthpiece inner diameter 16.5~17mm, wall thickness 3.2mm, largest finger hole diameter 9.5mm, mouthpiece width 10mm, mouthpiece depth 8mm ・Surface finish: Self-oiling coating during oil extraction ・Weight: 48g The sound produced by this kena when all holes (6 on the front + 1 on the back) are covered is Do, and when all holes are open, the sound is Do, one octave higher. The finger holes are small, and the total length is short, making it easy for elementary school students to handle. Instant purchase is welcome.