The blade is very sharp and keeps long its cutting force.
The full metal housing is great. The blade is out clean and the knife fits comfortably in your hand.
However, it can lock the blade a little hard. The thumbwheel has a thread with a large pitch, which too little pressure is applied. For thick cartons is borderline. Since the larger version of the knife is significantly better. For light work, it is however sufficient.
Why only 4 stars.
So good overall.