A Wire-O binding holds the covers and pages of a document firmly in place by a double-loop wire inserted through holes drilled in their left edges. All of the document’s pages lie flat when opened. Wire-O books can also be folded back to 360 degrees without damage to the spine.
Wire-O books allow for images or charts spread across two pages, and are ideal for any book that needs to stay open when not being held: cookbooks, instruction manuals, calendars, or meeting materials. Wire-O books are durable, but do not permit printing on the document spine or the insertion of new pages.
Wire-O bindings come in nine standard colors and loop diameters from 3/16" to 1-1/4". They can handle documents from 1/8" to 1" thick.
See also: