Feature:The mobile Dolly Roller Base is a high quality products.Its maximum weight limit of 330 pounds and is easy to assemble.Main function of the base is to heighten the height of the floor standing home appliance, like refrigerator,washing machine or other home appliance.It's using the high-quality stainless steel,bearing force strong , it can keep good stability under the condition of the limit , and better corrosion resistance in a damp environment.Easily adjustable the sturdy stainless steel to suit the large furniture.Press resistance, stable and durable.Maintaining ventilation of the bottom.Effectively reduce the washing machine vibration and noise.Specifications:Material: Plastic and Stainless SteelColor: White and BlackType: Adjustable Movable BaseMax Weight Capacity: 250kg/551lbsExtendable Length:45-65cmExtendable Width: 45-65cmPackage Included:4 x Panel4 x Stainless Steel Pipe4/8/12 x Feet1 x Installation Tool1 x InstructionsNote:Please check several times if base is stable before each placing.Quality AssuranceIf you have any questions, please feel free to contact us, we will reply you as soon as possible within 24 hours.