GBC Wire Bind Machine W20 Manual Paper Document plus 300 A4 34 Loop Wire Binding Elements. Cover is broken as shown in the image. This does not prevent the machine from working. The GBC Wire Bind Machine W20 is a desktop binding machine designed for office use. With a paper size of A4, this multifunction printer features a 2-speed setting for efficient binding of documents. As a unit from the trusted brand GBC, this binding machine is perfect for businesses and offices looking to professionally bind their paper documents. Its compact and user-friendly design makes it easy to use for everyday document binding needs.