4 New Washing Machine Anti Vibration Mounting Pads . These measure 4" x 4" x 1/2" and feature 1 piece design for durability. These are the best pads out there as the rubber component is not too hard and not too soft , to allow the vibrations to be absorbed. See video for proof!  These weigh roughly 5 ounces per pad , so they are dense and will withstand many years of operation.