Patio Umbrella Ring & Plug Set, Clear Plastic, 2-In Diameter Quantity 12 Transparent design compliments any finish and reduces umbrella swaying caused by wind Reduces friction and prevents scratches and dents on unstable umbrella poles Included cap finishes the look of tabletop when umbrella is not in use Stabilizes, aligns, and protects patio umbrellas 2-Inch Ring Diameter - 12 Count