Its description says it can punch 10 pages at one time. Effectively, this is no problem. I even tried to punch 16 and you do it, although it should force with 2 hands. So better be confined to 10 pages Recommended if one wishes to keep his perforelieur longer.
First thing, I suggest for the first perforations to take test sheets. I noticed traces of oil lining the holes in my first two tests. After that, the perforations were clean. Then think actually to sink the pages to ensure that they are punched correctly.
Other than that, my only concern was a bookbinding. Because it was the first time I ulitisais this type of device, I fumbled to find how to place the comb rings. The instructions I have not been a great help in this respect and I had to search for videos on the internet to really see in detail how to properly position the type of binding. Well, once you understand the mechanism, it is a breeze with a joystick stroke.
In short, it is a device that is suitable for family use. On an industrial scale, it would be a waste of time and energy so that there are more suitable devices for professional use. So I'm glad this perforelieur. If done what I expected, this no frills.