Product Attributes: Package includes 12 replacement parts for metal 2-ring binder mechanism, 6 D-shaped (25mm), 6 O-shaped (22mm), length 4.8 inches; distance between holes 2.8 inches
High Quality Material: Made of high-quality metal, made of high-quality stainless steel material, using electroplating process, corrosion-resistant and durable, it will be a long-term use for notebook binder
Durable and Sturdy: Suitable for A7 sized loose leaf notebooks or other A7 sized plans with broken ring binding mechanisms. It is sturdy and will be the long-term use of notebook binder
Easy to Use: When you need to add or delete pages, you can easily open and close them, making them easy to use and very suitable for organizing projects, documents, etc
Widely Used: The binding mechanism is spiral and easy to replace, making it easy to replace your planner, junior, and more, suitable for office, school, home and many other occasions