Binditek 100 Pack Plastic Spiral Binding Coils, 8mm(5/16"), 40 Sheet Capacity, 4:1 Pitch, Black, 48Loops, for Letter Size, for Students and Coworkers — Open-Box, 10% Off

【40 Sheet Capacity】These plastic spiral binding coils, measuring 8mm (5/16") in diameter, can securely hold up to 40 sheets of #20 paper. They have been proven through testing reports and are capable of withstanding frequent use.

【4:1 Pitch & 48 Loops】Spiral binding coils have a 4:1 pitch, making them compatible with any binding machine that punches 4 holes per inch. (Attention: These 4:1 pitch binding coils are not compatible with the Cinch machine.)

【360-Degree Rotation】Plastic spiral binding coils provide a 360-degree page-turning rotation capability for easier reading, allowing bound projects to lay flat.

【For Letter Size】These 48-loop binding coils are perfect for letter-sized paper (8.5 x 11 Inches). The length can also be cut with Binditek coil crimpers pliers according to personal requirements.

【100 Binding Coils】Long-lasting and sturdy plastic spiral binding coils ensures long-term productivity for all your binding projects, allowing you to bind paper sheets with ease and store them for an extended period. Ideal for engineering files, business projects, office documents, and university presentations, they serve as amazing gifts suitable for teachers, students, and coworkers.

Binditek Plastic spines/spiral /coils are made by precision equipment from well-experienced manufactory. These 5/16 inch spiral binding coils are created by high-quality raw material to achieve hard form and good color fastness over time. Binding coils are used in engineer file, business project, office documents, university presentations and more. A lay-flat design with the ability to flip pages 360?? from front to back. The 48 loops plastic coils in black fits letter sized paper(8.5x11 inches) 4:1 pitch 4 holes per inch. Compatiable with any standard 48 loops plastic coils-binding system.