Thick foam cushion conforms to furniture bottom while polymer plastic base allows smooth effortless movement across any floor surfaceâ€”carpeting, wood, ceramic tiles and linoleum. Designed to absorb the impact of floor surface changes. Reusable disks are ideal for use on large desks, credenzas, safes, bookcases and more. Use them over and over again. Will not scratch, mar or damage clean floors or carpeting.