Color: F Key Handcrafted bitter bamboo flute made from 8year shadedried bamboo. Carefully finished by skilled craftsmen, each flute features engraved poetry on the tube wall, black bone and black binding lines for crack prevention, and a finely polished white copper joint for a solid fit and minimal air leakage. The dense bamboo fiber structure produces a clear, stable tone across available keys. Key benefits Authentic material and aging: bitter bamboo dried in the shade for eight years delivers stable density and consistent acoustic response. Fine workmanship: hand polishing, engraved decoration, and secure binding increase durability while preserving aesthetic appeal. Reliable joint and seal: white copper connection is finely polished to reduce air loss and ensure a secure assembly. Versatile tuning options: five standard keys available to suit different musical styles and skill levels. Unique appearance: natural variations in color, grain, and finish mean each flute is a oneofakind instrument. Available keys and tonal character C: suited for playing sad and graceful pieces D: suited for quiet and stable playing E: suited for pieces with national character F: suitable for elementary use G: suitable for beginners Sizes (length diameter) C: 68 x 2.5 cm D: 62 x 2.5 cm E: 57 x 2.3 cm F: 54 x 2.3 cm G: 49.5 x 2.2 cm Packing sizes C: 49.5 x 9 x 6 cm D: 39.5 x 9 x 6 cm E: 36 x 9 x 6 cm F: 35.5 x 9 x 6 cm G: 33 x 9 x 6 cm Practical applications and scenarios Practice and learning: G and F keys are well suited for beginners and elementary students working on tone production and basic melodies. Performance and ensemble: C, D, and E keys offer distinct timbral qualities for solo pieces, chamber groups, or traditional ensemble settings. Gift or display: the engraved design and handcrafted finish make this flute an attractive gift or decorative instrument for collectors. Additional notes Five conventional tunings are available to match different musical needs. Each instrument is hand finished so design, color, and finish may vary slightly. After receiving the instrument, please contact our customer service team with any questions and we will respond in a timely manner.