What Gauge are Wire-O bindings?

September 20, 2018
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If you are wondering that the gauge of a wire binding spine is, then we can help. The below chart gives you the gauge, or the thickness, of the wire itself that is used to make James Burn Wire-O binding spines; the most popular and highest quality twin loop wire on the market. You will notice that as the diameter of the twin loop wire gets larger, the gauge gets thicker to make the wires stronger and more capable of handling thicker and heavier books. These gauges are approximations, and may have a slight variance.

Wire-O DiameterWire Gauge
3/16"0.0276
1/4"0.0276
5/16"0.0315
7/16"0.035
1/2"0.035
9/16"0.0394
5/8"0.0472
3/4"0.0472
7/8"0.0472
1"0.059
1 ¼"0.059
1 ½"0.059


Mallory Morsa, Binding101 Product ExpertAbout the Author • Mallory Morsa is the product expert and content specialist at Binding101, and has been a valued team member since 2008. She started her career here in customer service, moved onto sales supervisor, product management, and then onto content. She takes a hands-on approach to products, and truly gets to know how every item works before she writes about them, with a goal to give you all of the honest information you need to make a confident buying decision. She has a bachelor's degree with a focus on management and marketing, and has been a writer, photographer, and videographer for many years. In her free time, she loves to read by the pool, volunteer at the local animal shelter in the kitten nursery, and snuggle her three furbabies while she binge watches Netflix.

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