... coil or Double Loop Wire Binding, also known as Twin Loop Wire, Double-O® Wire, Wire-O, and WireBind, ... lie-flat books, open or closed. Double Loop wire bound books open flat and turn 360 degrees. ... this way we get the high quality nylon coated wire ,it has nice and shiny look , Strong adhesion ... has stable quality , low wastage. Double Loop Wire Binding provides a sophisticated look for documents up to ...