Wire bindingis a popular commercialbook bindingmethod, and is known by a number of different names includingtwin loop wire,wire-o,double loop wire,double-o,ring wireandwirebind. With this binding method, users insert theirpunched pagesonto a "C" shapedspineand then use awire closerto squeeze the spine until it is round.Documents that are bound with wire binding will open completely flat on a desk and allow for 360 degree rotation of bound pages.