VERSATILE HAND PERCUSSION INSTRUMENT SET: This portable instrument is perfect for musical accompaniment and can also be an ideal tool for personal relaxation and educational purposes COMPACT DESIGN: Its compact design and craftsmanship allow you to play long-sustained notes while creating an interesting "wah" sound effect. The wah tube is suitable for band performances or as a tool for early childhood education MATERIAL: The percussion learning tool is made of sturdy aluminum alloy and wood. Covering the opening with your thumb and tapping the tube can produce a pleasant "wah" sound, evoking happiness and pleasure FASCINATING: The wah tube is a fun percussion instrument that produces fixed-frequency tones with just a tap LONG-LASTING SUSTAIN: As a fixed-frequency instrument, the children's educational rhythm tube provides long-lasting sustain when tapped