14mm (9/16") Maroon Spiral Plastic Coils [12" Long, 5:1 Pitch, 120 Sheet Capacity (approx)] (100/Box)
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14mm (9/16") Maroon Spiral Plastic Coils [12" Long, 5:1 Pitch, 120 Sheet Capacity (approx)] (100/Box)

Item #: 335114MARO
Brand: Binding101
  • 6mm (1/4") Diameter Blue Coils
  • Binds 5-35 Sheets (20 lb.) or a 5/32" Thick Stack
  • 5:1 Pitch (Special) Hole Spacing
  • 12" Long Coils (Standard Letter Size)
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These 6mm spiral coils (1/4") will bind up to about 35 sheets of 20 pound bond paper, or about a 5/32" thick stack of pages. They are blue coils that offer a bright, vibrant finish that goes well with many branding choices. They have a special 5:1 pitch hole spacing for compatibility with any specialized 5:1 pitch coil binding punch machine (keep in mind; these are not 4:1 pitch coils). 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.


Item #335114MARO
Manufacturer Item#335114MARO
Size14mm (9/16")
Sheet Capacity*5-35 Sheets (20 lb. bond paper)
Recommended Book Thickness5/32" (Loose Stack)
Maximum Binding Edge11"
Filament Diameter**1.6mm
Binding StyleSpiral Binding / Plastic Coil
Quantity100 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 more modern and durable way to bind books over the traditional comb spines, while still being affordable and simple to use. Another benefit of spiral binding coils over many other binding methods it 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. They 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).

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. 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 .

What Kind of Coils Do I Need to Buy?

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, 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

First, choose your coil length. 12" coils are made for letter size pages and are the most popular choice. 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.

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

Once you have chosen the length of your coil bind spine, choose your pitch. What is a binding pitch? Pitch refers to the holes per inch, or the hole spacing. They are reflected in a ratio that includes the number of holes, a colon punctuation, and then the inch measurement...for example, 4:1 is pronounced “four to one” and means that there are 4 holes for every 1 inch and 5:1 means there are 5 holes for every 1 inch.

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. You will want to check your spiral binding machine for compatibility before you buy spiral binders online.

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.

There is also a general rule with three simple steps to get the proper fit for spiral binding that works as well:

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.

Size (Millimeter)Size (Inches)Stack Capacity (Inches)Sheet Capacity* (20 lb. Bond)Filament Diameter
6mm1/4"5/32" Thick Stack5-35 Sheets1.6mm
7mm9/32"3/16" Thick Stack36-47 Sheets1.6mm
8mm5/16"1/4" Thick Stack48-60 Sheets1.6mm
9mm23/64"9/32" Thick Stack61-70 Sheets1.75mm
10mm3/8"5/16" Thick Stack71-80 Sheets1.75mm
11mm7/16"3/8" Thick Stack81-90 Sheets1.75mm
12mm1/2"13/32" Thick Stack91-100 Sheets1.75mm
13mm17/32"7/16" Thick Stack101-110 Sheets2mm
14mm9/16"15/32" Thick Stack111-120 Sheets2mm
15mm19/32"1/2" Thick Stack121-130 Sheets2mm
16mm5/8"9/16" Thick Stack131-140 Sheets2mm
17mm0.67"0.55" Thick Stack141-150 Sheets2mm
18mm23/32"5/8" Thick Stack151-160 Sheets2.08mm
19mm0.748"0.62" Thick Stack161-165 Sheets2.08mm
20mm3/4"11/16" Thick Stack161-170 Sheets2.08mm
22mm7/8"3/4" Thick Stack181-200 Sheets2.08mm
23mm9/10"4/5" Thick Stack201-210 Sheets2.08mm
25mm1"13/16" Thick Stack211-230 Sheets2.36mm
28mm1-1/8"7/8" Thick Stack231-250 Sheets2.36mm
30mm1-3/16"1" Thick Book251-270 Sheets2.36mm
32mm1-1/4"1-1/16" Thick Stack271-290 Sheets2.36mm
35mm1-3/8"1-1/4" Thick Stack291-300 Sheets2.36mm
38mm1-1/2"1-3/8" Thick Stack300-320 Sheets2.4mm
40mm1-9/16"1-1/2" Thick Stack321-350 Sheets2.4mm
45mm1-3/4"1-9/16" Thick Stack351-390 Sheets2.4mm
50mm2"1 -3/4" Thick Stack391-440 Sheets2.6mm

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.

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

* 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.

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Expert Reviews

Expert Reviewer: Mallory, Editor at Binding101Spiral 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!
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Spiral Binding Coil Supplies 5-Star Expert Review


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.

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.

Binding TypeSpiral CoilsWiresCombs
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 BentNoYesYes
Color ChoicesWhite, 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, RedWhite, Black, Clear, Gray, Blue, Navy, Maroon, Red, Green, Brown***, Matte Black***


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.

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.

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.

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