4X Rubber Anti Vibration Pads Washer Dryer Machines Reduce Noise Walking Reduces irritating noise & damaging vibration. Reduces maintenence costs, For use with all Washers & dryers. Easy to install. Simply slide the pads under each corner of the appliance for maximum performance No more dancing machines. Diameter of each base is a little over 2 1/2" inches. The diameter of the hole on top is a little over 1 3/4" inches.