Plutreas 100 Pack Plastic Spiral Binding Coils, 4:1 Pitch, Spiral Binding Spines for Office Documents, Engineer Papers, Business Projects (8mm (40 Sheet Capacity))

• High Quality: Durable and strong plastic spiral binding coils allow you to compile paper sheets with ease and store for a long time.
• Dimensions: The 48 loops plastic binding spirals fit letter sized paper(8.5x11.0 inches) All binding spirals have a 4:1 pitch, they will fit any binding machine that punches 4 holes per inch
• Keep Files Organized: binder coils can help you organize messy documents, keep them organized and orderly, so to help your desk keep tidy, which are ideal for office documents, engineer papers, business projects, presentations and more, versatile and practical
• Convenience: Binding coils are in lay- flat. 360-degree rotation to add and subtract paper sheets easily
• Sheet Capacity: 40 sheets, Spine Diameter: 8mm(5/16 inch), Package Contain: Pack of 100 binding spirals

A lay-flat design with the ability to flip pages 360° from front to back. 12 inches long, fits letter sized paper. Plenty of excess, crimp the ends for a finished look. 4:1 pitch binding coils, compatible with 4:1 pitch binding machine. 4:1 means per inch has 4 holes Coil binding is an ideal choice for daily life, which provides a professional solution for your own school projects, handbooks, office reports, planning calendars, and more. Turn your loose documents into a professional-looking report with Plutreas Binding Coils.