Product review (1 stars): DO NOT BUY THESE!!!!  But a substitute available here.
These are the same junk that the dishwasher came with, don't buy them.  Instead purchase Whirlpool W10712394 Adjuster KIT. They are metal and much better plastic and don't have those cheap clips that hold on the rollers. Along with this video you can have it done in a flash. https://www.youtube.com/watch?v=otUn8eoceBw