The pioneering Fastbind Casing-in sheetâ„¢ transforms any soft cover book into a valuable hard cover book. It enables you to attach a hard cover to the bound block made with your existing glue binder. The Fastbind Casing-In Sheetâ„¢ is very different from a standard endpaper: It is in between the end sheet and the cover, never to be seen. So, the end papers of your book (front and back) can be colored, printed and even foiled or laminated!