Features: Pronunciation principles 1 edge effect Air holes caused by sides at specific angles, cut through When the airflow is at the edge of the groove, a part of the airflow groove is left. Part of the airflow enters the flute, producing vibrations and sounds of a certain frequency. 2 Resonance effect When the flute and flute airflow enters a rotating spiral and moves forward, Until you follow this process and leave the flute The diameter and length of the air column tube lumen, This creates different resonant frequencies and thus pitches. Specification Color: black (as shown in the picture) Material: Bamboo Number of holes: 6 Dimensions: Length 18.62in/47.3 cm; Diameter 0.71in/1.8 cm inches Suitable for: Beginners and amateurs Quantity: 1 piece Notes: Because bamboo is a natural product and a purely handmade product, The size and bamboo pattern of each product will be slightly different. But it does not affect the use and timbre of the flute, please don’t worry Please allow 1-3cm differences due to manual measurement. Due to differences between monitors, images may not reflect the actual color of the item.