Product review (5 stars): It WORKS
I got a Kenmore front loading washer a couple years ago and have been battling vibration walking ever since.  We found a couple things helped, but nothing that actually stopped it.  Until this product.  It was a bit pricey at 5% of the cost of the machine, but I was sooo tired of running down to the basement to hold the machine so it wouldn't pull the hoses off the wall.  These don't stop the noise when it is spinning, but the machine hasn't moved an inch since we installed them a few weeks ago.  And I purposely ran the worst offenders - throw rugs and towels.