Wire binding machines punch documents, manuals, reports or books by using double loop wire binding or twin loop wire binding. Wire binding machines secure printed materials and creates professional documents that lay flat for easy reading.Wire binding machines punch two holes per inch (2:1 pitch), three holes per inch (3:1 pitch) or both. A wire binding machine helps you run a smooth punch and bind operation. Wire binding machines are an excellent choice for projects requiring a full range of functions or sturdy construction.