1.Quality Materials - Our heavy duty pads are made from a blend of hard durometer rubbers allowing for long life and high performance. 2. Practical Design - Our improved design allows your washing machine or dryer to be stable on any type of floor without the need for adhesive, thanks to the miniature grip pattern on the underside of each mat. 3.Practical Accessories - Keep the appliances in place, they would also reduce noise, can significantly reduce the transmission of vibration from the washer/dryer to the floor. 4.Increase the distance between the device and the floor to make cleaning easier. These anti-vibration mats can be used on tile, concrete, wood, vinyl, linoleum, stone and other hard surface floors. 5.Inner diameter: 4.7cm, height: 1.5+2.5cm Vibration absorber for most brand washing machines and large appliances. Description Material: Rubber, plastic resin Color: gray Outer diameter: 7 cm Inner diameter: 4.7 cm Features Improved planing design: our improved design allows your washing machine or dryer to be stable on any type of floor without the need for adhesive, thanks to the miniature handle on the bottom of each mat. Excellent Vibration Resistance: This set of 4 pads can significantly reduce the transmission of vibration from the washer/dryer to the floor. ADVANCED MATERIALS: Our heavy duty liners are a hardness rubber blend that provides a durable, high performance liner. Package Contents 4 x Washing Machine Anti-Vibration Pad