Description These Loose-leaf Binder Rings are made of high-grade and durable iron material and are durablefor long-lasting use. Binders are suitable for many purposes, such as loose-leaf, memo filing, etc. Reusable metal binding ring, can be replaced . They are simple in design, but very practical to use and will give you a good experience. Features -Color:Black-Material:Iron-Size:29.70X1.20X1.00cm/11.67X0.47X0.39in-Suitable for most people, such as students, teachers, and so on. Firm and durable, so that your desk calendar and notebook in order .-The excellent manufacturing process enables them to have good performance. It is very funny.-These Binder Rings are made of high class material and rigorous manufacturing processes. -The excellent performance of our Loose-leaf Binder Ring will bring you a good experience.-You can buy the professional and practical products at an affordable price. Easy to use, just pull open, then squeeze close . Packing list: 100 x Loose Leaf Binder Rings