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. It weighs 50 lbs to ensure that your umbrella would not move during use. In addition, the base is quite easy to set up, just put the pole into the hole and rotate the pole the tighten it, then you will get a solid umbrella base to support your umbrella enjoying your leisure time with your friends or family.