describe:[High-quality double-layer design]Upper layer: PP (polypropylene) solid plastic, durable.Bottom layer: TPU rubber.Wear-resistant, non-slip, gentle and protective of the ground. It absorbs vibrations and noise when machine washed. Recommended to be used in electrical merchandise with vibration and noise. Suppress vibration and stop deflection.【Easy to clean lifting table】When there's a drain outlet below the washing machine, area for the drain hose would be ensured. Lift domestic appliances and furniture at the bottom to avoid direct contact with the ground, preserve moisture and the floor from damage, and make cleansing easy.Specification:Height:4CMInner diameter: 5CMDiameter:10CMSet contents:Anti-vibration pad set of four pieces.Notice:1 cm = 10 mm = 0.39 inchesPlease enable 1-3mm error due to manual measurement. Please make sure you don't intellect earlier than bidding.Due to variations between diversified monitors, photographs might not reflect the actual shade of the item. Thanks!