100 Pack Plastic Spiral Binding Coils 8mm (5/16") 40 Sheet Capacity, 4:1 Pitch, Binder Binding Spirals Rings for Spiral Binder

Convenient Sharing: Packaged with 100 binding coils, this spiral binding set provides ample supply for multiple projects. The generous quantity not only meets your own needs but also makes it easy to share with colleagues or classmates, fostering collaborative efforts while maintaining organization
Large Capacity & Durable: With a capacity to hold up to 40 sheets of paper, these black plastic binding coils ensure your documents stay neatly organized. Crafted from high-quality plastic, they're built to withstand frequent use, offering both reliability and longevity for your binding projects
Perfect for Letter Size: These coil binding are specifically designed to accommodate letter-sized paper (8.5 x 11 inches). The 48 loops fit the 4:1 pitch standard, making them compatible with binding machines that punch 4 holes per inch, ensuring a professional finish every time
Smooth 360-Degree Rotation: Experience seamless page turning with these coil binding spines. The 360-degree rotation feature allows your bound documents to lie flat, making reading and presentation more convenient and enhancing the user experience with smooth, effortless page flips
Versatile Usage: Whether you're working on engineering files, business proposals, office documents, or university presentations, these spiral coils for binding are your go-to solution. Their sleek black design complements any document, making them ideal for both professional and educational environments

Specifications:
Color: Black
Material: Plastic
Size: Length: 37cm/14.5inch
Inner diameter: 8mm/0.31inch

Packing list:
100pcs 8mm(5/16") plastic spiral binding coils

Hello,