Product review (1 stars): Ugh.
To be fair, this poorly designed knob replaces another poorly designed knob that came with my Whirlpool dryer. As with the original knob, it broke within weeks. It's mostly plastic except for a thin metal insert which (in theory) should prevent any cracking/splitting as one applies pressure and turns the knob. It doesn't achieve this. I've resorted to using pliers in order to operate my dryer.