Yescom 20-inch 20-lbs Semicircle Umbrella Base Heavy Stand Holder Fit for Half Patio Garden Umbrella Black Fit for half patio umbrella Upright Tube Dia.: 2 3/16" (55mm); Overall Dimension (LxW): 19 11/16" x 13" (50 x 33cm) Attractive elegant rose 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