Adjustable stackable shims the height of your furniture with a stackable design for larger gaps in residential and commercial settings. Long lasting rubber construction Made from flexible rubber, it withstands heavy loads without deforming, reliable in all applications. Tool installation No tools needed. Place these spacers under any table or chair to level quickly and efficiently. Multi use Suitable for various uses like leveling furniture, doors, and panels on wood, tile, and carpet surfaces. Use scenarios Level a wobbly dining table on uneven floors such as wood or tile to prevent tipping and enhance stability. Stabilize an office chair on a carpeted floor to reduce rocking and keep an even height under load. Align a cabinet door or interior panel that rubs on the floor, improving clearance on wood, tile, or carpet surfaces.