Features HIGH PAPER CAPACITY These double loop binding rings can hold up to 120 sheets of paper (A4, 70g), meeting your important binding needs. Metallic Inner Wire: The binding wires are made of high-strength metal iron, solid and durable, allowing you to join papers easily for long-term storage. NYLON COATED - The cables feature an external nylon coating that offers good surface gloss, corrosion resistance and wear resistance for long time use. PERFECT SIZE - Each binding spine has a diameter of 9/16" and a thickness of 0.8mm. Each spine has a 3:1 pitch and has 34 double loops, allowing 360 degree rotation. Application: Used to bind documents, files or important reports for your upcoming presentations or projects. Compatible with most wire binding systems (3:1 pitch and 34 hole pattern). 1. HIGH PAPER CAPACITY These double loop binding rings can hold up to 120 sheets of paper (A4, 70g), meeting your important binding needs. 2. Metallic Inner Wire: The binding wires are made of high-strength metal iron, solid and durable, allowing you to join papers easily for long-term storage. 3. NYLON COATED - The cables feature an external nylon coating that offers good surface gloss, corrosion resistance and wear resistance for long time use. 4. PERFECT SIZE - Each binding spine has a diameter of 9/16" and a thickness of 0.8mm. Each spine has a 3:1 pitch and has 34 double loops, allowing 360 degree rotation. 5. Application: Used to bind documents, files or important reports for your upcoming presentations or projects. Compatible with most wire binding systems (3:1 pitch and 34 hole pattern). Specification: Item Type: Spiral Double Loop Wire Binding Rings Material: iron, nylon Binding diameter: approx. 14.3 mm/0.56 inches Binding capacity: 120 sheets (A4, 70g) Teeth Quantity: 34 Teeth Ratio: 3:1 Packing List: 100 x Binding Spine with Comb Package List 100 x Comb Binding Spine