Provide Strong Support for Your Outdoor Leisure Time!The 24'' square outdoor umbrella base stand is made of selected heavy-duty steel with a powder-coated surface, ensuring great weather resistance and rust resistance, allowing you to use it outdoors all year around. Moreover, it is equipped with 2 adapters to fit different umbrellas with a diameter of 1.6'' or 1.9'', and you can use the 2 adjustable tightening knobs to secure the umbrella pole preventing it from wobbling or falling. More importantly, this umbrella base comes with 2 built-in wheels on one side and a carrying handle on the other side, helping you move effortlessly in any area of the patio, terrace, backyard, and deck.