The item contain 4pcs lifter, please order the right quantity according to your needs. .High Quality MaterialsHeavy duty wood colour furniture risers are. The Heavy duty material of the bed risers ensure long life of use and maximum durability. .FunctionAdds additional height and storage space under beds and furniture making cleaning underneath furniture easier especial great for robot vacuums. .Suitable for all FurnitureRaises beds, couches, armchairs, desks, sofas, and other heavy stationary furniture height to assist the sit to stand process and boost ergonomics. .Protect Floor The smooth edges of these heavy-duty bed risers wont scuff floors or snag carpet. won't scratch or dent hardwood floors. .