Wire-O and Spiral Binding

Both of these mechanical bindings hold far fewer pages than comb binding. Wire-O is a series of parallel wire loops attached along a wire, while spiral binding is a metal or plastic continuous loop passing through the punched holes in a spiral from the top to the bottom of the book. Neither binding method will accept as many pages as GBC. Also neither provides a printable spine or allows for pages to be added or removed. However, both binding methods allow the product to lie flat.