Product review (4 stars): What Kitchenaid should use in the first place
I ordered this as the 3rd replacement of my KitchenAid upper rack bracket.  These are much better made than the original.  The wheels are attached with screws, not flimsy plastic tabs, and the brackets themselves are metal.  They should outlast the dishwasher.

The wheels on the kit I ordered were too big to fit my dishwasher, but putting the old wheels on these brackets was easy.  The height adjuster works better than the old one. I had no problems following the included instructions.  The replacement took about 15 minutes.

I'm happy with this purchase.