Tired of paying the printer for simple binding jobs? Now you can bind documents like a pro right at home or office with this 100-pack of 8mm (5/16”) black plastic coil binding! Each coil is 12 inches long with a 4:1 pitch, perfect for binding reports, presentations, manuals, or any documents that need to lie flat. The 360-degree rotation means pages turn smoothly and stay exactly where you put them. Use these with any 4:1 pitch coil binding system - they're compatible with most standard binding machines. Whether you're a student putting together a thesis, a teacher creating classroom materials, or an office professional preparing client presentations, having these coils on hand saves time and money. The black color looks professional for business documents, and the plastic construction is durable enough to handle frequent use. Seriously, once you start binding your own documents, you'll wonder why you ever paid someone else to do it. The 100-count means you've got plenty for multiple projects, and the quality ensures your bound documents look clean and organized. Take control of your document presentation with these reliable binding coils!