PrintOnWeb.in provides Wiro Binding online for your documents. Wire Binding, also known as Wire-O Binding, Twin Loop, Double-Loop, Double-O, Duo-Wire, or simply Wire Binding, is a popular method for joining the pages and cover of a bound document. Wire-O binding offers many of the same benefits as spiral coil binding, but is more sophisticated in appearance. As such, it produces a very impressive document. Also, it can accommodate pages and inserts of varying thicknesses, including dividers or index tabs made from heavy cardstock. The Wire-O binding method utilizes pre-formed pairs of wire loops that run along a C-shaped unit. These wire loops are inserted through holes that have been punched through the book’s cover and pages. The loops are then crimped closer together until they form a perfect circle, thus securing the cover and pages as an assembly, yet allowing them to open freely.