These music notation clips are made of nice materials, strong and durable, waterproof and not easy to break or rust. They can fix the place and keep the book open so that your hands can play music or sing as you like. They can also be used for recipes, books, magazines and manuals, etc. Features -Color:Transparent -Material: Acrylic -Size: About 21.50X2.00X1.50cm/8.45X0.79X0.59in -Made of acrylic materials, they have excellent practicability and durability. -Our music folders are suitable for users of most ages and can bring you a very good experience. -Simple design, easy to operate. Very suitable for you who like simple style. -In addition, the clamping force is very strong, which can help you fix your music book very well. -Can be given as a gift to your friends who are learning musical instruments. They will definitely be very happy. Package list: 4 x clips