This is a Japanese-made Quena (F pipe) made of bamboo. It's an Argentinian type. Vintage rose-colored thread is wrapped at the top and bottom. Like the Shinobue flute, a brand is stamped on the bottom of the pipe. 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 60g Outer diameter near the mouthpiece: 23mm Mouthpiece size: 7x8mm Mouthpiece to bottom: 421mm Lowest note: F Brand: Dochu (道中) You will surely be satisfied. Please consider it.