This stapler is primarily its usefulness when you want to connect with their environment a set of sheets of A4 or A3 for folding and booklet making (respectively A5 or A4 size). This is an alternative to using socks or blankets coated lining, which is convenient if you take good care that the severed portion of the staples or the inside of the fold (to save the fingers) ... It is provided with a depth stop slidably on a graduated scale in inches and cm, the groove has a depth of 30 cm (12 inches). It uses 24/6 to 26/6 staples. This is not professional equipment, but it remains solid and convenient for those in the utility.