Stabilizes?? aligns?? and protects patio umbrellas</br>Reduces friction and prevents scratches and dents on unstable umbrella poles</br>Included cap finishes the look of tabletop when umbrella is not in use</br>Transparent design compliments any finish and reduces umbrella swaying caused by wind</br>Includes flexible ring and solid plastic cap for 1-1/2"o 2-1/2" table openings</br></br>Product Description</br></br>The umbrella hole ring prevents the patio umbrella from swaying?? wobbling?? and leaning.  It also eliminates scratches and dents on the umbrella pole cause by friction with the patio table.  Also includes a solid plastic cap for covering table gaps when the umbrella is not in use.</br><br/>http://www.amazon.com/gp/product/B001004LM2ee