Binditek Plastic Spiral Binding Coils 200 Pack, 6mm (1/4") & 8mm (5/16"), 4:1 Pitch, Black, for Letter Size, 48 Loops, 100 Pack Each Size, for Students and Coworkers
【6mm + 8mm Essential Set — 200 Coils Total】 This bundle includes 100 plastic spiral coils in 6mm (1/4") and 100 in 8mm (5/16")—the two most commonly used sizes for everyday binding tasks. A practical combination that covers thin handouts, class materials, project booklets, and work reports without unnecessary sizes.
【Choose the Right Coil for Every Document】 Select the size that fits your pages: the 6mm plastic spiral binding coils hold up to 30 sheets, great for resumes, guides, invoices, and light projects. The 8mm spiral binding coils secure up to 40 sheets, ideal for thicker reports and training materials. Clear, efficient, and easy to use (capacity based on 20 lb paper).
【Universal 4:1 Pitch — Smooth 360° Page Turn】 Designed with a standard 4:1 pitch, these spiral coils work with most coil-binding machines (not compatible with Cinch machines). Pages rotate a full 360° for easy note-taking, photocopying, and desk-friendly reading.
【Letter Size Ready — 48 Loops per Coil】 Each spiral binding coil features 48 loops, sized for letter paper (8.5" x 11"). Coils can be used straight out of the box or trimmed to custom lengths with standard coil-binding pliers.
【Strong, Flexible & Built for Daily Use】 Made from high-quality plastic that resists twisting and maintains its shape, these plastic spiral binding coils keep documents neatly secured. A reliable option for offices, classrooms, designers, engineers, and students preparing reports, portfolios, and project files.