Pajean 30 Pcs 8 Mm/ 5/16 Inch Spiral Binding Coil Coil Bindings Spines 4: 1 Pitch 54 Sheet Capacity Plastic Binder Combs for Teacher Office Document Notebook Business Proposals Reports Menus(White)

Large Binding Capacity: our spiral binding coils can hold up to 54 sheets of standard 20# copy paper, which is equivalent to the maximum binding capacity of 9/32 inches in thickness, and fits well for most office projects to improve efficiency and save binding costs. Suitable Length: each plastic coil binding is 12 inches long, this suitable size is nice for letter-sized books, documents or binding projects, so you don't have to face the problem that the coil is too short; In addition, the coil has a lot of extra parts, so you can curl the ends to get pretty appearance. 4: 1 Pitch: binding coils are compatible with most 4: 1 coil binding machines and convenient to use; The coils are equipped with 48 loops for every 12 inches of coils, and their 4: 1 pitch matches the pattern of 4 holes per inch on the side of the book, easy to assemble. Prefabricated Coils: these spine coils have a diameter of 8 mm/ 5/16 inch, which can improve durability and maintain strength, and provide you with long-term service; They are the first choice for easy binding of books, documents or reports in the office. Reliable Plastic: spiral bind coils are made of quality plastic, safe and smooth, and can easily create binding projects that lie flat with our binding coils; With softness and flexibility, their structure will not bend or jam, making your business proposals, reports, menus and more look neat and elegant