Features: 1.[Utility]:The tapered design seats the umbrella correctly, reducing wobbling and preventing scratches or dents. With this patio umbrella cone, there will be no more wobbly umbrellas on windy days. 2.[East to Install]:It works for table and umbrella combinations and takes only seconds to install. Simply push, twist and turn until fully inserted. It is recommended to pour a little oil before installation to help smooth installation. 3.[Wide range of application]:It is suitable for any patio table, sunshade, patio umbrella and even more options. 4.[Durable material]:Made of high density rubber with high quality UV, weather and corrosion resistance, easy to clean and dry. 5.Please measure your table and umbrella pole before purchase. The size of the rubber cover is 38mm inner diameter, 50mm minimum outer diameter,69mm maximum outer diameter and 57mm height Specifications: Size: inner diameter 38mm minimum outer diameter 50mm maximum outer diameter 69mm height 57mm 1 x rubber cover