The flute aid is made of high class materials, and the surface is wear-resistant and smooth. It has excellent material. The perfect present for flute beginner players, children and adults. The compact size is enough to fit in your pocket and enjoy fun anytime, anywhere. Features -Color: Transparent -Material: PVC -Size: 3.00X3.00X2.00cm/1.18X1.18X0.79in -Note: It is universal in D, E, F, G, tune. -It can help you practice flute playing and improve your flute playing skills. -The surface is polished, smooth and textured, very safe and comfortable to use. -Suitable for bamboo flute, woodwind flute, excellent selection of materials, safe to use. -The installation is simple, the operation is convenient, and it will not take up too much time and energy. -High durability and not easy to deform. The workmanship is fine, the texture is good, and the practicability is . Package list: 1 x Flute Aid