Pino Kena's features: The process of burning the inside of the bamboo, which no Japanese Kena maker has mastered, is applied to prevent insect damage and pitch changes over time. This process was taught at a Kena workshop in Peru. Product Information: Material: Peruvian bamboo Total Length: 38.3cm Outer Diameter: 29.5mm Inner Diameter: 17.5mm Thickness: 6mm Mouthpiece Width: 11mm Mouthpiece Depth: 9mm Maximum Hole Diameter: 12mm Weight: 115g Pitch: 442hz (Individual variation possible) ✳️ Kena Workshop Pino does not sell on other sites.