Product review (4 stars): Whirlpool Agitator Repair kit
Not as sturdy as I would have liked for OEM but what I really needed was the dog ears.  I bought the whole package just in case I needed other parts, as I've never replaced dog ears before and didn't know what I was getting into.  It doesn't come with instructions.  I had instructions off of the net and they were step by step perfect.  The other parts got thrown away as the original parts where more sturdy and still worked fine, unbeknownst to me.  I'll just buy the ears next time.  Chao'!