Wire-O is a binding method that uses a double loop of wire to hold together the pages of a book or document. This technique allows the pages to lay flat when opened, making it ideal for notebooks, calendars, and presentations. The wire comes in various colors and sizes, providing options for different styles and uses. The Wire-O binding process involves punching holes along the edge of the pages and threading the wire through these holes. This creates a durable and flexible binding that can withstand frequent use. It is commonly used in both commercial printing and DIY projects.