Product review (5 stars): Easy to install and great quality
We have a Kenmore 665.13293K115. It's about 1.5 years old and the original part broke. All the little wheels broke off at the same time. Kenmore wanted to send us a Repairman just to look at it for 50 $. We looked up the parts at Sears, it had no picture, so we didn't know, if it's the same "crappy" plastic adjuster set for about the same price as this kit on Amazon.
So we decided to order this adjuster kit instead. It took my husband 15 minutes and no video instructions to install it.
It has good-quality stainless steel parts, which should last a little bit longer than the original plastic parts.

It's been installed since a month now, so I can't say much about the longevity.