The function is guaranteed, and the part has the first experiments also survived. Shockingly, I find rather the quality of that alleged mark product. The metal is too thin and tangled up and does not act appropriately to me for the price. One reviewer noted the quality of the old models. This I can confirm because my grandma had such an old part which was extremely stable. Well, my mother is satisfied with the part. I myself would probably send it back again and buy a cheap part at Ikea or elsewhere for half the price in the same quality.
