RAYSON 31.8mm Spiral Wire Coil Binding, 3:1 Pitch, 1-1/4" Metal Coils Binding 280 Sheets Capacity, Black Color & Pack of 50

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About this item 【Binding Capacity】Binds up to 280 sheets of 20lb paper, with a 2.5mm margin for optimal capacity, ideal for larger documents and high-volume projects 【3:1 Pitch Des ign】Specifically designed for 3:1 pitch binding machines, featuring 3 holes per inch. This format differs from 4:1 pitch systems 【Versatile & Easy to Use】Compatible with U.S. Letter or A4 paper sizes, each coil is 12" long with 36 loops, and can be trimmed to fit using RAYSON wire coil crimper plier 【Durable Metal Construction】Made from high-quality metal, these wire coils ensure document longevity, allowing them to open flat and rotate 360 degrees for easy reading and copying 【Cost-Effective Pack of 50】Available in classic black, these coils offer a budget-friendly solution for binding projects in the office, school, or home Show more