A Wire-O binding, originating from England, is perfect for books consisting of different materials. Starting with light papers, e.g. 70 gsm, up to heavy cardboard (400 gsm and more). Synthetic print media, such as transparent papers or PVC foils, can also be combined using a Wire-O binding. Essentially, all sheets are collected individually, punched and then bound. The finished books have the advantage of lying completely flat on the table when opened, and all sheets can be turned by almost 360°.