Product review (1 stars): Just as bad as the originals
These knobs are just as junky as the Jenn-Air/Whirlpool originals.  The interior posts broke within a year.

The problem with these and the originals is that the interior post that connects to the burner control is made of plastic and it snaps under a small amount of twisting pressure.  I found much better versions with zinc die cast posts produced by a seller on ebay.