Product review (5 stars): Which would you prefer?
A $300 visit from a washing machine repairman, or a $10 package that you can install in literally minutes yourself?  That's right. Yourself. No matter who you are.

Being a little handy, when I noticed that large loads of clothes stopped the agitator of my laundry machine, I investigated it.  I found that the agitator assembly is separate from the motor and drum and is actually accessed from the top of the machine.  No pulling, crawling, or getting dirty necessary!

Use a socket wrench with an extension and the whole thing comes off with one bolt that is located under a plug in the center.  Once you have it out, it separates into two pieces and you can see that the dogs just sit on top of some pegs. As the machine ages, the tiny lip on the dogs wears away, until they will no longer catch the serrated surface of the inside of the agitator.

You pop off the old ones, pop on the new ones (No glue or screws needed!) and you're done! The washing machine will work like new again!

This is the best and easiest fix you'll ever do and was a trade secret until the advent of the internet!