The trimmer works well and cuts as indicated up to 6 sheets of paper. (80g / m²) until 8 pages, he gave up and actually bends the paper only. For a precise cutting result I recommend, however, to cut the same as few pages. In addition, the easy on the cutting edge of the guillotine as it is not so heavily used. One shortcoming of the guillotine in my eyes is the lack of a safety device on the guillotine. There is no device to prevent that one can hurt themselves with it. This keeps the unit nice and flat, although at the same time makes it unusable for people who are very clumsy (I can think of in their own environment a few!), Or of course for children.
The slitter Works well in spite of its not quite as stable initial impression, the perforation of the shaft section and the single cut does not work well, only the double cut really. Somehow this blade makes me just a cut. The Revolver with 4 knives can sometimes turn a little hakelig, but is otherwise a great idea.
Conclusion:
The set is recommended if you can do without the safety of the Guillotine. For 20 euros, there are comparable Guillotines coming operate safely as well but without additional slitter. If you want to a secure device with protection against injury you have to pay roughly twice or 3 times.