When you are practicing or playing, the sheet music folder is your perfect . It makes reading music easier and brings more to the performer. The sheet music folder can be expanded to 4 at the same time, You can complete all performances without turning , which solves the problem of musicians interrupting performance due to page turning. There is no between the inner of the sheet music folder,You can put the music score in the score folder, or you can write directly in the score folder without taking out the music score. When you are playing on the stage, you can see the music sheets without the reflection of light, which can relieve eye fatigue and protect your eyes. The cover of the sheet music folder is made of frosted PP material, which has the function of waterproof and anti-drop for long-term protection of documents. The sheet music folder adopts metal double-ring spiral binding, the opening position is accurate, not easy to loosen, and the sheet music can be tiled to 180 degree. The sheet music folder has a 4-sided PP hard cover, even if the music shelf does not support outer , it can support the sheet music without falling down. The corners of the sheet music are designed in a semicircle, which will not scratch your hands, the inner are stable, and the score will not fall . The sheet music folder can hold 40 sheets music at the same time, not just 4 sheets of sheet music. The sheet music folder is suitable for any instrument and any occasion, and is a perfect gift for instrument players. Sheet music folder is a multifunctional file folder organizer,that can documents, , files, not just music scores. Colour:black Material:PP Package Contents: 1 * Sheet music folder Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.