Yescom 108lbs 19" Fan Shaped Resin Beton Base Stand Black for Outdoor Patio Offset Umbrella(Pack of 4) Fit for offset patio umbrella Overall Dimension (Dia. x L): 19 1/8" x 26" (48.5 x 66cm) Attractive elegant decorative pattern and antique finish Heavy base holds umbrella stable and safe; Better rust resistance for long time use Made of Resin and beton, strong and durable; Simple assembly required