Product review (5 stars): Whirlpool should be giving these away instead of making the consumer pay for a defective original design.
It did a good job of keeping my relatively new machine from jumping around, and cost a lot less than what Whirlpool was asking.  Whirlpool should be providing these free to all owners since the original design was defective (not enough tension and poor bushing design).  The new design has improved bushings and higher tension.  Make sure to have an assistant with skinny arms help you install these things, lol!