Reliable material: The binder rings are made of solid metal, making them waterproof, rust-proof, and durable with a long lifespan. Applications: This binder is suitable for A5 size loose-leaf notebooks and planners, helping you easily organize your items. It is widely used in your daily life and work. Sturdy design: The binder rings are approximately 12.5 cm long in total, with each ring approximately 2.5 cm in diameter. The double-hole design ensures a secure fit and prevents them from falling off. Easy to use: The binder rings open and close easily, allowing you to add or remove pages. They are very convenient and flexible to use and replace. What you get: You will receive 10 double-hole binders, suitable for various occasions such as the office, school, and home. They can be used to organize small documents, providing many conveniences in your daily life. Please read the product information carefully before purchasing.