Reusable 5" diameter polymer disksIdeal for moving anything heavy in the home or officeUse on entertainment centers, credenzas, bureaus, armoires, safes, display cases, large desks, bookcases, and more. Slides on carpeting, Wood floors, Ceramic Tiles, LinoleumSlide even the heaviest furniture - effortlessly. For use in the home, office, workshop, anywhere!Designed to absorb the impact of floor surface changesWill not scratch, mar, or damage floors or carpets