These high quality covers are designed to be used with your GBC Velobind Binding System. Each case includes 2 adhesive fly sheets. All you need to do is bind your document with an adhesive fly sheet on the front and back of the book block using your Velobind binding machine. You can use a Velobind Hot Knife System or you can use a 4 pin Reclosable Velobind Binding Strip. In fact, if you don't have the GBC equipment for this, you can even use a heavy duty stapler to staple the book together and still use these hard cover cases. Either way, once your book block is bound, you simply peel off the adhesive backing from the fly sheets and stick the book block into the hard cover case. In just minutes you have a high quality hard bound document that looks professional and is bound permanently. So if you’re looking to have a professionally bound document or book but don’t want to break your budget, Velobind just might be the answer to your problem!