Genuine VIBRAFIX pads are one of the best washing machine anti-vibration solutions on the market. You will not be disappointed! If this product does not fix or reduce the vibration issue just return it for a full refund. This product is made out of quality rubber blend that has very good vibration absorbing abilities and among the highest coefficient of friction in the rubber family. This will prevent any "walking" or skidding of your washer.* If "walking" of washer is your main problem we highly recommended purchasing the Super Anchor Liner Discs that will keep the VIBRAFIX pads and your appliances locked in place for good. To purchase Anchor Discs click on ENJ Products, LLC. VIBRAFIX pads are 3 inches in diameter and 1 inch thick. They are black in color and come in set of four. In the middle they have indentation for machine feet. This indentation is universal in size and will work with most size and brands. The pads will also absorb any dryer vibration, so DON'T FORGET to buy an additional set of VIBRAFIX pads for your drier to keep your appliances at the same height.* NOTE: PLEASE FOLLOW INSTALLATION INSTRUCTIONS INCLUDING WASHER LEVELING AFTER THE PADS ARE INSTALLED (i.e. checking each washer foot when in spin cycle and lowering until movement is minimized)! *- Results and performance will vary and depend on your situation i.e. type of flooring, size and balance of the load, machine level, etc. --Please check our reviews--