RAYSON 11.1mm Spiral Wire Coil Binding, 3:1 Pitch, 7/16" Metal Coils Spiral Binding 80 Sheets Capacity, Multicolor & Pack of 100 — Open-Box, 21% Off

【Binding Capacity】Binds up to 80 sheets of 20lb paper, with a 2.5mm margin for optimal capacity, ideal for smaller documents and light projects

【3:1 Pitch Design】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 and A4 paper sizes, each coil is 12" long with 36 loops, and can be trimmed to fit using RAYSON coil crimper pliers

【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 100】Available in multiple colors (Yellow, Blue, Red, Purple, Pink), these coils provide a budget-friendly solution for binding projects at the office, school, or home

RAYSON wire coil binding spines are designed for durability and ease of use, making them the perfect choice for binding reports, presentations, and documents in various settings. Crafted from high-quality metal, these coils not only enhance the longevity of your documents but also allow them to open flat and rotate 360 degrees for easy reading and copying. With the capacity to bind up to 80 sheets of 20lb paper, these coils are ideal for smaller projects. Keep in mind that the margin size affects the number of sheets you can bind, and a 2.5mm margin is recommended for 80 sheets. The 3:1 pitch design, with 3 holes per inch, is specifically engineered for use with 3:1 pitch binding machines. It's important to distinguish this from 4:1 pitch systems, which have different requirements. These versatile wire coils are compatible with any 3:1 pitch coil or wire binding machine, making them great for professional use in the office, classroom, or at home. Each pack includes 100 coils in vibrant colors such as Yellow, Blue, Red, Purple, and Pink. The coils have 36 loops and are suitable for both Letter Size and A4 sheets, with the option to trim any excess wire as needed. RAYSON wire spiral binding coils are clean, neat, and built to last, ensuring your documents stay securely bound. Whether you're binding by hand or using one of RAYSON's binding machines like the PT1202, TD-132, or TD-130, these coils make the binding process simple and efficient.