-Binding: Uses paired metal loops threaded through punched holes along the page edge.
-Appearance: Gives a neat, professional finish and allows the book to lay flat when open.
-Pros: Clean look, durable, smooth page turning, can handle thicker documents.
-Cons: Wires can bend if mishandled; not ideal for heavy outdoor use.
-Common Uses: Reports, notebooks, planners, calendars, and presentation books.