High quality: 4 sets of shock absorbers are made of high-quality rubber and environmentally friendly PP (polypropylene) with excellent durability. The bottom layer is made of 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 shock absorber can reduce the noise caused by the instability of the washing machine or dryer. Significantly reduce vibration transfer from the washing machine / dryer to the floor and avoid scratches, scratches and abrasion. Protect household appliances from scratches and protect your floors.Inner diameter:4.8cm; Height:1.6 + 3.3cm; Suitable comptiable with most brands of washing machines and shock absorbers comptiable with large appliances. Attach 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 absorber into position.Multifunctional: each cushion can be overlapped to meet different height requirements. It is suitable comptiable with washing machines, refrigerators, trolleys, washing machines, tumble dryers and sofas, tables, beds etc