Ras plastic bowl of grater that break after 3 uses! I thought I had found the right thing with this all-metal grater. Certainly it is solid, no problem about that. But every time, and more grated cheese is obtained on some tracks blackish deposit aluminum or aluminum oxides tout court, it does not want to eat them! Having sorted for a while the black pieces in the grated cheese, grater I stored in the closet.