Product review (1 stars): Don't buy, poor design. Instead look for redesigned upgraded Whirlpool part
If you buy this (not recommended) don't buy from North America HVAC. The description claims this is an OEM part. What I received was a cheap plastic knockoff that lasted 3 weeks.

I then turned to YouTube and Google and found a new part that should be MUCH better and last considerably longer than this poor Whirlpool design.

I urge anyone looking for this part to instead checkout Whirlpool W10712394 Adjuster Kit. It's about $20 on Amazon and is totally redesigned part. It's stainless steel and the mechanism that holds the wheels on is no longer a brittle plastic tab. I bought and installed and the replacement seems much more durable. Don't waste your time on this part. Upgrade for a few dollars more.