Convenience comes in coils, with handy coil binding spines, which provide a professional binding solution for important projects. They are ideal for busy environments, like corporate offices, universities, engineering, architectural or construction firms. High quality coils are flexible and stylish. Coil binding is an excellent choice for documents that need to be mailed or stacked. Sturdy, 18mm coils have a 140-sheet capacity and 12” length, making them great for medium-sized binding projects. Coil bindings lie flat for easy reading, and have 360-degree rotation capability. Spines have a 4:1 pitch, which means that they have four loops per inch. Professional-looking coil bindings are a permanent solution and cannot be unbound for editing. Designed for use with all ColorCoil Machines (sold separately). A box of 100 coils ensures long-term productivity for your binding projects.