Spiral Plastic Coil 4:1 12" [Wynn's Purple, 8 mm (5/16")] 100 /Box

Discover the versatility and durability of spiral binding plastic coils, a timeless choice for your binding needs. Our spiral coils are crafted from resilient and flexible plastic, providing a contemporary alternative to traditional plastic comb spines, all while maintaining affordability and user-friendly functionality.

One key advantage of spiral binding coils is their unique ability to allow books to flip pages a full 360 degrees without causing damage. This feature ensures that your bound materials can lay flat, promoting easy readability. The coils effortlessly bounce back to their original shape, maintaining resilience even with frequent use and bending.

Not just durable, our plastic coils are designed for hygiene convenience. The material can be easily sanitized between users, offering a practical solution for maintaining cleanliness and preventing the spread of illnesses like COVID-19. Pair them with laminated or fully encapsulated contents for an added layer of protection.

Ready to experience the durability and convenience of spiral binding plastic coils? Explore our extensive selection of color options at Spiral today. Benefit from fast shipping to your home or office with our in-stock coil binders. For those with specific preferences, we offer custom cut lengths and special order colors.

Unsure about the right size for your needs? Consult our comprehensive guide below for assistance in selecting the perfect coils. If you still have questions, feel free to contact us for personalized support. Elevate your binding experience with Spiral!

We offer a huge selection of spiral binding coils for you to choose from, most stocked in all our nation-wide USA warehouses for fast shipment and delivery. There are four different categories of coil to choose from, including the length of the coil, the pitch (hole spacing), the diameter (or coil size), and the color. Here are the steps to follow for how to choose the binding coils you need to buy.

Spiral binding coils are stocked in 12-inch and 36-inch lengths.

• 12" coils are made for letter-size pages and are the most popular choice. The extra inch of length leaves you with a half-inch on each edge of your book, which is just enough space for you to cut and crim-in the edges.
• 36" length are a bit more specialty, primarily used by print shops are those wanting to make multiple books from one single-coil spine. 36-inch length coils are also great for oversize and jumbo books. They also allow users with smaller or more unique document sizes to create more books from one long coil, reducing waste.

Need a different length? You can easily cut down the above-stocked coil lengths to the size you need, but sometimes that is not the most efficient option for larger quantities. If you need 100 or more coils of a specific length, consider custom cut coils instead. And remember to order 1" longer than your document length so you have that extra 1/2" on each end that allows for cutting/crimping in and finishing the bind.

Pitch refers to the holes-per-inch or the hole spacing. It is reflected in a ratio that includes the number of holes, a punctuation colon, and then the inch measurement. For example: 4:1. This ratio is read aloud/pronounced as "four to one” and means that there are 4 holes for every 1 inch of length.

The standard pitch in the United States for the plastic coil is 4:1.

4:1 pitch binding coil spines are by far the most popular, as it is the standard spacing for coils in the United States. About 98% of our customers order 4:1 pitch spiral bindings. The 5:1 is a specialty spacing that is manufactured primarily for print shops that have specialty equipment for punching the pattern, and users who may have machines manufactured in other countries where the 5:1 spacing is more common. Some even more specialized machines will have other hole patterns for coil, such as 3:1, 2.5:1, and even 2.231mm. You will want to check your spiral binding machine for compatibility before you buy spiral binders online, though keep in mind that most machines are 4:1.

Now choose your coil size (diameter) for your document. You can use the coil bind capacity chart below to help choose the best size based on your stack thickness or your sheet capacity. Just note that the sheet capacity was calculated using sheets (not pages) that were all 20 lb. bond copy paper, without any covers; this means it can vary significantly depending on the stock you are using, which is why we recommend the stack thickness method instead. And remember: having a coil that is slightly too large is better than having a coil that is too small; a small coil won't allow pages to flip smoothly and can pinch them, tear more easily. So if you are between sizes, we recommend you size-up.

If you want an alternative solution to choose the best size, you can utilize this general rule of thumb:

1. Take the pages and covers being bound and lay the stack flat on a table.
2. Measure the thickness of the stack, but don’t press down; let it lay naturally loose.
3. Add 1/8" to the stack thickness - that will be the size of the binding coil recommended for your document thickness.

Lastly, choose your coil binding comb color.

Stocked colors for most sizes and pitches include black, white, clear, royal blue, navy blue, red, and silver. The colors are solid, not coated, so even with heavy use and scratching, they will remain. Black coils are the most popular choice, while white and clear are close behind. Maroon and navy blue are popular choices for professional institutions, as they often match corporate branding. Red and royal blue are brighter and more vibrant than the others, so are more common for schools and other organizations where brighter colored coil bindings are needed.

We also have a large collection of special-order colors that we can make your spines with. Below are just a few of the most popular more unique colors, including a bright canary yellow, baby pink, lilac purple, ocean teal, baby blue, neon green,  neon orange, and electric blue. In addition to these, we have charcoal coils, cream spines, dark pink spirals, and many more.

If you have any questions or are still not sure what kind of coil to buy, please click the live chat button or call us at (866) 537-2244 for help.

We already know that coil binding is one of the most popular methods on the market in 2021. They are commonly used for brochures, reports, financial statements, manuals, calendars, cookbooks, children's books, marketing materials, and more. But why do they hold the largest market share in the bookbinding industry? In this quick overview, we will show you the pros and cons of this classic document binding spine solution.

In simple terms, “pitch” refers to the hole spacing or the hole-punch pattern itself. 4:1 pitch is the standard for spiral binding coils, which means that there are 4 holes for every inch of binding. So an 11” binding edge would have either 43 or 44 holes, depending on the margin size.

Lay your stack of papers, including covers, on a table and measure the thickness, without pressing the stack down. Add 1/8 of an inch to that measurement and that is your recommended binding size. When in doubt, size up; a slightly too large coil is easily worked with, while a slightly too small coil makes it hard to turn pages and can rip your sheets when doing so.

Absolutely! We can typically begin offering discounted prices when you buy 10 or more boxes of one specific size and color of coils. Click the live chat button on your screen to request a quote.

The gauge of the coil —which refers to the thickness of the plastic— starts at 63 and thickens as the coils get larger, topping off at 103 gauge.

The largest binding coil is 50mm or 2 inches, which will hold about 440 sheets of copy paper or about a 1 and 3/4 inch thick book. It is one of the largest capacity spine-binding options on the market, with the exception of traditional 3-ring binders.

Looking for more helpful information? Spend some time combing (no pun intended)  through our blog, aptly titled Binding University, where you can find endless resources when it comes to documentation binding, lamination or finishing, and so much more. Here are a few of our most popular articles that cover various topics specifically related to spiral coil binding.

* The sheet capacity rating above was calculated using all 20 lb. bond paper, with no covers and no other paper stocks. The actual sheet capacity will vary depending on what paper stock and covers you are using. For this reason, we recommend you use the stack capacity for a more accurate fit. All of these capacities are approximations. If you are between sizes, we recommend you size-up to allow for easier page-turning.