The 4101 book former by Rhin-O-Tuff makes spiral binding a breeze with its smooth operation. This contraption can be used either vertically or horizontally, depending on the size of the documents you need to bind. It can work with binding edges between 5.5" to 14" long, so it is a great choice whether you are working on a small or large product. The 4101 can give your final product a unique flair by using one of Rhin-O-Tuff's different colored coils. What this product essentially does is shape the spine of your book to enable easy coil insertion. It doesn't require any extra equipment, which increases its ease of use. At a mere 7 lbs, it is a very lightweight and compact product that can easily fit on a desktop without taking up much room. The 4101 book former is an extremely durable product that will last you for years. If you should find anything unsatisfactory about your book former, it comes with a one-year warranty. Purchase your 4101 today!