Product review (5 stars): Amazing!
When our Bosch washing machine was new, it stayed where it was put.  Over time, however, it began to walk out of position during the cycle.  One day, I actually cracked part of the plastic cover when manhandling it back into position.  We decided that something had to be done, and tried these feet.
Wow!  They work really great!  It was quite difficult to get them into position: I had to make a special tool from a long piece of plywood that could both push and pull the feet, and it's a two-person job.  But, once in position, they have absolutely stopped our Bosch machine from moving during wash cycles.  They have been in service now for more than a year, and are still working great.