The knobs are of good weight and quality. I got immediate response when I needed an additional 3 knobs( I counted incorrectly) and that order was cancelled ( was not processed yet) and reordered. They came like on the third day. 
The description of the item was
Correct except for the place of origin which was important to me. I went out of my way to make sure I ordered items that were made in the United States. When the knobs arrived, on the front of the package it stated “Made in China”