50mm (2") Black Spiral Plastic Coils [12" Long, 4:1 Pitch, 440 Sheet Capacity (approx)] (50/Box)
These 50mm spiral coils (2") will bind up to about 440 sheets of 20 pound bond paper, or about a 1-3/4" thick stack of pages. They are black coils that offer a professional and clean look for your book. They have standard 4:1 pitch hole spacing for perfect compatibility with any 4:1 pitch coil binding punch machine. These coil binders are 12" long for standard letter size pages measuring 11" on the binding edge; the extra 1/2" on each end is essential to allow for cutting/crimping-in of the ends. The plastic material makes them flexible, durable, and perfect for personal, education, or professional document bindings of all kinds. These spiraled binder spines are packaged with 100 coil spines per box.
|391-440 Sheets (20 lb. bond paper)
|Recommended Book Thickness
|1-3/4" (Loose Stack)
|Maximum Binding Edge
|Spiral Binding / Plastic Coil
|50 Coils / Box
Spiral binding plastic coils are one of the most popular traditional binding methods available. They consist of a continuous spiraled coil that is made of durable and flexible plastic and is rolled into holes along a binding edge. Spiral binding coils offer a modern bookbinding alternative when compared to traditional plastic comb spines, while still being affordable and easy to use.
Another benefit of spiral binding coils over many other binding methods is that coil-bound books have the ability to flip pages completely around a full 360 degrees without damaging the contents, so they can lay flat and stay flat. This allows your book pages to flip all the way around from front to back for easy readability. The spines also bounce-back to their original shape, even after heavy use and bending.
Plus, the plastic material can easily be sanitized between users (just pair with contents that are laminated / fully encapsulated for an easy-to-clean solution to help prevent the spread of COVID-19 and other illnesses).
If you are ready for one of the most durable binding spines available, then buy color spiral binding plastic coils online at Binding101 today. We have a huge selection of coil binders in-stock and ready for fast shipping to your home or office. Plus,. custom cut lengths and special order colors are also available for your individual preferences.
Need some help choosing the right size for your individual needs? Read our guide below that can help you determine what kinds of coils you should select. Or, if you still need help, give our representatives a call at (866) 537-2244 .
How do I choose a spiral coil?
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.
1) Choose a Coil Length
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.
2) Choose a Coil Pitch
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.
3) Choose a Coil Size (Diameter)
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.
|Stack Capacity (Inches)
|Sheet Capacity* (20 lb. Bond)
|5/32" Thick Stack
|3/16" Thick Stack
|1/4" Thick Stack
|9/32" Thick Stack
|5/16" Thick Stack
|3/8" Thick Stack
|13/32" Thick Stack
|7/16" Thick Stack
|15/32" Thick Stack
|1/2" Thick Stack
|9/16" Thick Stack
|0.55" Thick Stack
|5/8" Thick Stack
|0.62" Thick Stack
|11/16" Thick Stack
|3/4" Thick Stack
|4/5" Thick Stack
|13/16" Thick Stack
|7/8" Thick Stack
|1" Thick Book
|1-1/16" Thick Stack
|1-1/4" Thick Stack
|1-3/8" Thick Stack
|1-1/2" Thick Stack
|1-9/16" Thick Stack
|1 -3/4" Thick Stack
If you want an alternative solution to choose the best size, you can utilize this general rule of thumb:
- Take the pages and covers being bound and lay the stack flat on a table.
- Measure the thickness of the stack, but don’t press down; let it lay naturally loose.
- Add 1/8" to the stack thickness - that will be the size of the binding coil recommended for your document thickness.
4) Choose a Coil Color
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.
Pros and Cons of Spiral Binding
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.
Durable & Flexible - The plastic that coils are made of is incredibly flexible and durable. This means they can bounce around and bend, and still go back to their original shape. This makes them incredibly durable and resistant to damage that could harm the look and functionality of your presentation.
Easily Cleaned & Sanitized - The plastic material is easily cleaned and sanitized using any liquid cleaner of your choice. The plastic can easily air dry and be re-used by new people without having to worry about the spread of germs and viruses. If you plan to clean and reuse your coil books, be sure you also protect your pages by laminating them.
Pages Turn 360° - Page turning is extra convenient when they can flip the sheets all the way around so they sit back-to-back.
Affordable - Coil binding spines are incredibly affordable for users of all kinds with all budgets.
Several Lengths Available - This makes it easy to make any non-standard size book without wasting many coils.
Many Stocked Colors - There are eight stocked colored coils including black, white, clear, navy blue, blue, maroon, red, and forest green.
Special-Order Colors Available - We can brand-match with our selection of special order coil colors with low minimum order requirements.
Plastic - Some users really don't like the look of plastic at all, and would do better with the premium finish that a metal spine would offer, such as a twin loop wire.
Inserting Troubles - Inserting the coils can be a bit of a hassle for some users, depending on the equipment available. Especially for thick books that use large diameter coils, rolling the spirals through all of those holes can take some time and fiddling.
3-Step Process - Some bindings like wire and comb have 2-steps; simply punch and bind. Coil, however, has 3 steps; punch, insert the coils, and crimp-in the ends.
No Perfect Registration - Because of their spiraled design (and the angled rotation), coils are not optimal for projects requiring tight registration across spreads, as the pages do not align perfectly from side to side.
100pc Minimum - Depending on the size, coils will be packaged with either 100 or 50 spines per box. We can only sell full box quantities, so some individual users who just want to bind a couple of books would be better off getting their coil at a local print shop or having those businesses bind their books for them.
Top 5 Spiral Binding FAQs
1. What does “pitch” mean?
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.
2. How do I choose the right coil 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.
3. Can I get a bulk discount?
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.
4. What gauge is the coil?
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.
5. What is the largest book I can make with coil?
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.
From our Blog: Binding University
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.
Spiral Coil Bindings Expert Review by Mallory Morsa
About Our Expert • Mallory Morsa has worked in several different departments in her 10+ years at Binding101. Beginning in customer service and sales, she honed in her skills to provide the customer with professional, fast, and accurate information. Shortly after, she was promoted to sales supervisor and product expert, gaining hands-on and in-depth product research as well as training the team on new products. She now holds the position of content specialist, taking her extensive knowledge of our products and putting it on the web for you to access at any time. In her expert reviews, she outlines the good and the bad of products that she has handled herself, and uses her experience to identify the ideal users. If you have any questions or need more information about this product, please call our trained customer care team at (866)537-2244. Thank you for stopping by!
I RECOMMEND THIS FOR:
Spiral coil binding is the ideal choice for anyone who needs a durable and flexible binding spine. For users such as those who may travel with their bound documents on sales calls, or go to conferences across the country, coil bindings are a great choice because they are durable enough to withstand handling and packaging without being damaged (but be sure to protect your pages properly with report covers). They might not be the best choice for high-end presentations, though, because some users feel that the plastic is not very professional; but if durability, longevity, and ease-of-use are important to you, then plastic coil binding might just be the best bet.
HOW COIL COMPARES TO OTHER BINDINGS:
When talking about punch-and-bind solutions, coil binding is often what people first picture in their minds. In fact, spiral coils are the most popular way to bind presentations and books within a business across the board. But with that in mind, let’s compare some of the functions and features of coils with other popular punch-and-bind options, so you can more accurately gauge which one will be the best choice for your individual needs.
|Largest Book You Can Bind*
|1 ¾" Thick Stack
About 440 Sheets
(With a 50mm Coil)
|1 ⅛" Thick Stack
About 260 Sheets
(With a 1 ¼" Wire)
|1 ⅞" Thick Stack
About 425 Sheets**
(With a 2” Comb)
|Part of the reason why coil bindings can hold more capacity, even compared to larger alternatives, is because they are a continuous loop of plastic. Wires are metal (which doesn’t have the same bounce-back) with loops that protrude into the holes, and combs have prongs or teeth that tuck under the spine. The continuous coil is stronger and can hold more pages, without worry about them falling out.
|Damage when Bent
|White, Black, Maroon, Red, Clear, Blue, Navy, Forest Green
+ many special-order colors, including (not limited to) purple, pink, yellow, orange, baby blue, teal, leaf green, gold, charcoal, brown, pearl white, & more
|White, Black, Silver, Pewter, Blue, Navy, Gray, Gold, Green, Red
|White, Black, Clear, Gray, Blue, Navy, Maroon, Red, Green, Brown***, Matte Black***
WHAT I LIKE ABOUT SPIRALS:
As mentioned above, the most notable feature of coils is their durability. But if you’re asking me for my personal favorite thing about them...well, I would have to say it is that they make fun cat toys. Check out my cat, Shadow in this coil video at 0:14 in her moment of fame (supervised play only, IMO). In more seriousness, though, coil bindings are truly a staple in the industry. Preferred by the majority of businesses, they are simple, they look nice, and they’re tough.
I also love the huge variety of colors and the fact that, even the more unique special order colors, can be produced quickly, making them more accessible for any company, even those on a more strict deadline. The many colored coil options make it easy to brand-match them to your logo, your client’s business, or the theme of your specific presentation.
THINGS TO CONSIDER:
The reason for choosing options other than binding coils is nearly always the “cheap look” of the plastic. But that refers simple to the fact that the material is plastic, not to the thickness or make of the plastic. In fact, the plastic filament used to make coil bindings is quite thick, and this falls more to a color choice. For example, the black and clear are my favorite stocked colors precisely because of the fact that they look professional (and the pearl white special order; so gorgeous!). Something else we sometimes hear is that the bind process takes too long; customers who need something fast should consider some document binding solutions that don’t require punching at all, such as thermal binding or tape binding. And lastly, some users feel that it is too difficult to roll in the extra long coils through the many holes on a binding edge (usually 43 or 44 holes); those users would benefit from adding an electric coil inserter (preferably one with adjustable rollers) to drastically increase the speed and efficiency, virtually eliminating any stress. And even with all of these “negatives” or reasons why someone might choose a different binding over coil, our spiral binding still have an all 5-star rating, and remain our best selling binding supply.
THE BOTTOM LINE:
Spiral binding is awesome. That’s the bottom line!
* Approximations. Sheet capacity based on 20# bond copy paper. | ** Although the comb is larger, you will notice the sheet capacity is less. That is because of the weight of the paper sheets; too many pages will be too heavy for the comb prongs to hold. | *** Clearance colors, available in select sizes, while supplies last.