Rayson 15.9mm Plastic Spiral Coil Binding 3:1 Pitch, 5/8inch, 140 Sheets Capacity Black Coil Binding Spines - Versatile for Office and Educational Tasks, Pack of 100

【High Capacity】Bind up to 140 sheets of 80g/20lb paper, making it ideal for medium to large documents and high-volume projects

【Versatile Compatibility】Designed to work with U.S. letter size paper (8.5"x11") and ISO standard A4 size paper (8.3"x11.7"), with a length of approximately 12" (36 loops). The length can be easily adjusted with RAYSON coil crimper plier

【Durable Construction】Made from sturdy plastic, these black coils are built for long-lasting use, providing reliable binding for your important documents

【Great Value】Each box includes 100 black coils, offering a cost-effective solution for bulk binding needs, making it suitable for offices, schools, or home use

【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.

Simplify your document management with RAYSON’s 100-pack of 5/8" black plastic spiral binding coils. Tailored for 3:1 pitch binding machines, these durable and flexible coils are ideal for crafting polished reports, presentations, engineering documents, and office files. Capable of binding up to 140 sheets, they are the perfect solution for larger projects in the office, classroom, or at home. Constructed from robust plastic, these black coils ensure long-lasting durability while maintaining the flexibility for documents to lay flat, making reading and note-taking easier. Whether you’re a business professional, educator, or student, these coils simplify the process of binding multi-page documents, making it both efficient and hassle-free.