High Quality: 4 sets of shock absorbers are made of high quality rubber and eco-friendly PP (polypropylene) material with excellent durability. The bottom layer is rubber with friction, non-slip and soft properties. The double design can protect the floor from damage when moving, shaking or walking. Non-slip function: The damper can reduce the noise caused by the instability of the washing machine or dryer. Greatly reduce the transfer of vibration from the washing machine\/dryer to the floor and prevent scratches, scratches and abrasion. Protect household appliances from scratches and protect your floors. Inner Diameter: 4.8cm; Height: 1.6+3.3cm; Fits most brands of washing machines and major appliance dampers. Fix the devices in place and also reduce the noise. Easy to install: no tools or stickers required. Simply lift each corner of the machine and slide the shock into position. Multifunctional: Each cushion can be stacked to meet different height requirements. It is suitable for washing machines, refrigerators, trolleys, washing machines, dryers and sofas, tables, beds, etc