Product review (5 stars): Save $150 when you buy these!
My agitator stopped working a few weeks back and I was dreading having to call a repairman.  I actually had been looking at new washers as I hated to pay the $150+ service call I was going to be hit with.  I did a little research online and after a few you tube videos I decided to give this a try.  I ordered these on a Saturday evening and they arrived the following Tuesday.  I waited til Saturday to try and replace them as I wanted to make sure I had time to do it properly.  Well, come Saturday I went down to the laundry room with a 7/16 socket and screwdriver and much to my surprise in about 10 minutes I had completely finished and put my tools away.  This is a very easy replacement and the agitator is working like a champ now.  This little purchase saved me over $150 for sure.  I am going to order some spares for future use as I am sure it will keep my washer going for years now.  I strongly advise you try this even if you are not mechanically inclined.  It is so easy to replace them the I am sure my 7 year old could do it.