Product review (5 stars): ) This replacement has metal parts that appear more sturdy and has been working great
This replacement kit works well on my KitchenAid (apparently owned by Whirlpool) dishwasher.  My original brackets were mostly plastic and the plastic clips that hold the wheels just fatigued and broke off.  (The dishwasher is about 4 years old and we have well water.)  This replacement has metal parts that appear more sturdy and has been working great.