This is a G-key kena, Argentinian type, made of Japanese bamboo. It has vintage rose-colored thread wrapped at the top and bottom. Like the shinobue flute, it has a brand burned into the end of the tube. The inside is coated with cashew lacquer (dark brown) to prevent corrosion and mold, just like the shinobue flute, and it produces a beautiful tone. Type: Argentinian type Weight: Approximately 50g Outer diameter near the mouthpiece: 21.5mm Mouthpiece size: 7x8mm Mouthpiece to end of tube: 385mm Lowest note: G Brand: Michinaka (Road) You will surely be satisfied. Please consider it.