QUALITY BLACK PLASTIC - Easily create bound projects that lay flat with our binding coils. Their durable plastic construction wont bend or snag. The professional black color looks great on business proposals, reports, menus, and more.
PRECUT COILS - Each coil is 36 inches long and is perfect for binding books, documents, or other binding projects. Our coils have plenty of excess, so you can crimp the ends for a finished look.
18-MM PRE-SIZED COILS - These plastic coils measure 18mm, or 11/16 in diameter, for increased durability and holding strength. Easily bind books, documents, or reports in-office with pre-sized coils.
BINDING CAPACITY - Our plastic coils can hold up to 155 sheets of standard 20# copy paper each when bound.
4:1 PITCH - Compatible with most 4:1 coil-binding machines, our plastic coils have 144 loops per 36-inch coil. Their 4:1 pitch matches the 4-holes-per-inch punching pattern on the side of your book.