Product Attributes: Package includes 10 replacement parts for metal 3-ring binder mechanism, measures 8 inches in length; hole diameter is 0.8 inches; distance between holes: 2.64 inches High Quality Material: Made of high-quality metal, constructed from stainless steel with an electroplating process for corrosion resistance and durability, designed for long-term use in notebook binders Durable and Sturdy: Suitable for A5 sized loose leaf notebooks or other A5 sized planners with broken ring binding mechanisms. Strong and reliable for everyday use Easy to Use: Allows easy opening and closing for adding or removing pages, ideal for organizing projects, documents, and papers Widely Used: Spiral binding mechanism is simple to install and replace, compatible with planners, notebooks, and more, suitable for office, school, home, and other applications Dimensions: Length: 206mm / 8 inches, Width: 20mm / 0.8 inches Hole Specifications: Distance between 2 holes: 67mm / 2.64 inches, Hole diameter: 20mm / 0.8 inches Color: Silver Material: Metal Package Contents: 10 x 3-Ring Binder Note: Light reflection and different display settings may cause slight variations in color compared to the actual item. Measurement may vary by +/- 1-3cm.