Now you can make it to your document quickly and easily with new Zip Bind Spines. Zip Bind Spines feature unique snap over the mechanism similar to a three-ring binder. Once your document is bound and you need to make changes simply pull the spine open with your hand or pen replace your page and snap the spine shut like a three-ring binder. Edits have never been so easy. Zip Bind Spine works on combined 19 whole punch paper. Spine packages include handy tools to open or close by an easier. Zip Bind Spines easily bid on new combined binding machines and adaptors are available to fit on existing GBC machines. Swingline GBC Zip Combs Spines * Zip Combs Spines, 5/16" Diameter, Black, 50/Pack * Easily edit bound documents without a machine. * Simply open spine with a pen. * Make your changes and snap spine close. * Upgrade your CombBind documents easily for better functionality and professional appearance. Convenient Zip Combs spines allow you to easily edit bound documents without a machine. Simply open spine with a pen. Make your changes and snap spine close. Upgrade your CombBind documents easily for better functionality and a more professional appearance. Zip Combs spines work on any CombBind punched paper (19 holes). Sheet Capacity: 45; Spine Diameter: 5/16 in; Number of Rings: 19. ***Detailed Specs & Low Pricing on the Swingline GBC Zip Combs Spines CLICK BELOW*** http://www.ochimp.com/buy/catalogsearch/result/?q=Swingline+GBC+Zip+Combs+Spines&order=relevance&dir=descl - Swingline GBC