GBC ZipBind uses a new, upscale spine that really gives presentations that professional appearance you're looking for. ZipBind lets pages lie flat with 360° rotation for convenient note taking and photocopying. And, it zips and unzips like a zipper, so you can easily add and remove pages with a special editing tool. That means you can change your mind on the go. Just pull out your editing tool to zip and unzip the spine, and get on with your workday. This spine works with all Plastic Comb Binding binding machines. Or, if you don't have a comb binding machine you can buy prepunched comb binding paper and you won't need any machine at all. Plus, We even sell prepunched binding covers for use with GBC ZipBind spines.