Give your papers, files, and documents a professional touch with these plastic spiral binding coils. These binding coils can help to hold and organize a variety of paper sheets and files with one coil. They are also perfect to use at home or for the office. These flexible coils have 360-degree rotation to allow you to add and subtract paper sheets any time with ease, up to 160 pages. Binding coils measure approximately 12 inches with a diameter of 14 millimeters and 4:1 punching pitch, each spine has 48 loops each.