Product review (5 stars): Very easy to install in a few minutes and may save you hundreds!
Saved me the cost of a new washing machine! For months my washer was making crunching noises and the agitator would turn less and less. I'm not in the habit of watching my wash but I happened to be throwing in another pair of socks and noticed it was barely moving. I was able to hand turn the agitator in either direction with very little resistance. After a quick Google search I found these little gems! $5 and 5 minutes and it cleans like new!

This is literally a five minute job at most. You pop the top off the agitator and use a 3/4" socket drive extension to loosen the plastic trolley that holds these. It lifts right up, a plastic slide comes off and you drop these four dogs in place and then reverse the process. Thats all!

A quick test if you need this is to turn the agitator by hand, if the agitator turns easily in both directions and doesnt catch the bottom part when you turn it counter clockwise you should give these parts a try. You hopefully won't need a new machine or even have to call a repairman!