Ensure superior stability and versatility for your outdoor umbrella with this Heavy-Duty Round Umbrella Base. Designed to accommodate both residential and commercial use, this base can be filled with up to 83 lbs of sand or 19 liters of water (or a mix of both) to provide reliable support in windy conditions. Constructed from high-density polyethylene (HDPE) and featuring a corrosion-resistant galvanized steel tube, it combines durability with all-weather performance. The base fits umbrella poles with diameters ranging from 1. 38 in. to 1. 89 in. , secured by 2 adjustable knobs for easy installation and a custom fit. Ideal for lawns, beaches, pools, patios, or decks, this portable yet sturdy base is built to last and easily disassembled for compact storage when not in use. Color: Black. Material: Plastic.