Manufactured with premium material, practical and durable for long lasting use. Fine workmanship and beautiful appearance ensure the popularity and practicality. Bring a professional and functional look for your report, book, notebook and calendar. Features - Material: Iron - Made of high-class iron material, durable and practical for long lasting use. - The binder rings are meticulously made, and the color is not easy to peel off. - Beautiful and practical, this binder rings are very suitable for home, office, school, etc. - Lightweight and portable, they are very convenient for you to carry. It is very useful. - You can use these binder rings to bind stacks of loose leaf paper quickly and neatly without wasting time.