These products are made of , which have strong durability and practicality. The surface of the clip is smooth and free of burrs, which ensures that the clip will not scratch the book or the user's hand due to the burr. In addition, the page holders are waterproof, , and will not rust or crack. Features -Material: Plastic - It is made of premium plastic material, which is safe and durable for a long time use. - They can be used to hold documents, sheet music, and other papers as well, etc. - This music book clips is the best present for your friends and kids,the design can appeal to everybody. - Simply placed and keep the music page from blowing off, holding any book open flat, so your hand are free to work. - These products are designed with light weight and portable, easy to use and store. Package list: 10 x Clips