Product review (5 stars): Exactly what I needed!
I purchased these parts because I had just purchased a used Whirlpool washing machine on craigslist and I found that the agitator was not spinning. The washing machine worked fine in all other respects, however. A quick youtube search helped me to find the problem, and it turned out that all I needed were new agitator "dogs." (the plastic teeth that grip onto the agitator to make it turn)

Taking apart the agitator was quite easy with multiple youtube tutorials. I recommend you look one up prior to installing these. In and out it only took about 15 minutes to replace having never done any sort of work with any washing machine. Now my agitator spins just like new, even with my queen size comforters. Thanks a lot! Saved me a bunch on buying a new washing machine. I got a fully functioning washing machine for a hundred bucks and just a couple extra bucks for this part kit.