The grater I have been about 5 years in use and am quite happy with it. Well, especially the handles with the three spikes to as potatoes cut into slices for a gratin, without risk, to separate the fingers. Since it is made of plastic, they never came with us in the dishwasher, but was always washed by hand, which indeed is not a problem. Unfortunately, the plastic is not very stable, but is slowly crumbling and breaking out. I do not know if that in the age of throwaway society not perhaps is normal these days - I would in any case expect from a brand product a longer shelf life.
