Slipstick's Gripper Feet are designed to protect floors and stop furniture from moving. These are perfect for feet that are 2" to 2-1/4" in diameter. Protects hardwood, laminate, tile, parquet, and slate floors. These feet can be stuck on, or screwed on with the included hardware. The "Tilt-n-Slide feature allows you to tilt the furniture beyond 20 degrees to easily slide in or out from under tables, etc.