Product: 10piece replacement metal 3ring binder mechanism — 8.0 in length Key benefits Restore a broken A5size binder quickly and affordably — the worn mechanism instead of replacing the whole notebook. Secure, durable rings keep pages aligned and prevent loss or tearing over repeated use. Smooth open/close action makes adding or removing pages faster and easier for everyday organizing. What's included and exact dimensions Package contents: 10 replacement metal 3ring binder mechanisms (same model, identical parts). Overall length: 8.0 inches (measured along the base). Ring hole diameter: 0.8 inches. Centertocenter distance between holes: 2.64 inches. Material and build Constructed from quality stainless steel for strength and rust resistance. Electroplated finish increases corrosion resistance and provides a smooth surface for reliable operation. Built to withstand regular opening and closing without deforming. Function and compatibility Designed for A5sized looseleaf notebooks and other A5 planners or binders that use an 8inch, 3ring mechanism. Standard 0.8inch rings accept common punched paper and sheet protectors sized for A5 systems. Simple to operate: rings open and close cleanly to add, remove, or reorder pages as needed. Practical applications : a broken ring mechanism in an A5 notebook to extend its usable life. Organization: Use in project binders or planners where frequent page changes are required (meeting notes, class materials, field records). Small workshops or shops: Retrofit folders or custom covers to create a durable, reusable A5 binder. Why choose this part Accurate dimensions and consistent manufacture make these replacements interchangeable with standard 8inch, 3ring A5 mechanisms. Stainless steel and electroplating provide longterm durability and corrosion resistance for daily use. Note: Verify your binder's mounting method and hole spacing match the listed dimensions (8.0 in length, 0.8 in ring diameter, 2.64 in hole spacing) before to ensure compatibility.