Rayson 11.1mm Plastic Spiral Coil Binding 3:1 Pitch, 7/16inch, 80 Sheets Capacity White Coil Binding Spines - Versatile for Office and Educational Tasks, Pack of 100

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About This 【Binding Capacity】Binds up to 80 sheets of 80g/20lb paper with 3mm margin, making it ideal for smaller documents and light-duty projects 【Versatile】Compatible with both U.S. letter size paper (8.5"x11") and ISO standard A4 paper (8.3"x11.7"). Each coil is approximately 12" long with 36 loops, and the length can be easily adjusted using RAYSON coil crimper plier 【Durable Construction】Made from strong plastic, these white coils are built to last, ensuring durability for frequent use in binding important documents 【Great Value】Each pack contains 100 white coils, offering a cost-effective solution for bulk binding projects, whether in the office, classroom, or home 【3:1 Pitch Configuration】Designed with 3 holes per inch, specifically for 3:1 pitch binding machines. This format differs from the 4:1 pitch, which has 4 holes per inch and requires a different binding machine Show more