Clear Spiral Binding Coils

Buy clear spiral binding coils online at Binding101 for the best pricing and fastest shipping. This popular colored binder spine is stocked in the full range of sizes 6mm to 50mm so you can bind documents from just a few pages to huge 440 sheet books. We stock a wide variety of pitch patterns, lengths, and sizes to choose from.

Coil Binding Pitch

The pitch of a coil binding spine varies depending on your machine; the most common is a 4:1 pitch with 4 holes for every inch of length. 5:1, 3:1, 2.5:1. and 2.231 mm are also available for more specialized applications. "pitch" actually means the holes per inch. So the most popular 4:1 (read aloud as "four to one") has four holes for every one inch of length.

Coil Binder Spine Length

The most common length of pre-cut coil binding spirals is 12 inches. This is the best size for a standard letter size 11-inch document. The extra inch of length leaves one half of an inch on each side of your book, which allows you the space needed to cut and crimp the edges of the coil. There are also 36-inch coils available, which led you to choose the length you want for your various or more unique book sheet sizes.

Coil Binding Capacity

All capacities listed are approximations calculated based on standard 20 lb. copy paper. They are based on sheets of paper, not pages (every sheet has a front and a back page).

• 6mm (1/4") = 35 Sheets
• 7mm (9/32") = 47 Sheets
• 8mm (5/16") = 60 Sheets
• 9mm (23/64") = 70 Sheets
• 10mm (3/8") = 80 Sheets
• 11mm (7/16") = 90 Sheets
• 12mm (1/2") = 100 Sheets
• 13mm (17/32") = 110 Sheets
• 14mm (9/16") = 120 Sheets
• 15mm (19/32") = 130 Sheets
• 16mm (5/8") = 140 Sheets
• 17mm (0.67") = 150 Sheets
• 18mm (23/32") = 160 Sheets
• 20mm (3/4") = 170 Sheets
• 22mm (7/8") = 200 Sheets
• 25mm (1") = 230 Sheets
• 28mm (1-1/8") = 250 Sheets
• 30mm (1-3/16") = 270 Sheets
• 32mm (1-1/4") = 290 Sheets
• 35mm (1-3/8") = 300 Sheets
• 38mm (1-1/2") = 320 Sheets
• 40mm (1-5/8") = 350 Sheets
• 45mm (1-3/4") = 390 Sheets
• 50mm (2") = 440 Sheets

One of the main advantages to plastic coil binding is that it allows document pages to open 360 degrees and lay completely flat. With plastic spiral binding coils, you can efficiently and expertly produce documents that are ready to mail and leave a lasting impression.

Call us at (866)537-2244 if you need help choosing the best coil binding supplies for your needs individual needs.