Garden Oasis BZS02904 is an umbrella base designed to provide stability for umbrellas used with tables. It is made of cast iron for maximum stability and is easy to assemble, requiring only a few simple steps. The base is not free-standing and must be used in conjunction with a table. It comes with an extension pole that allows for adjustment to different table heights. The base has a sleek black finish that will complement any outdoor decor. It is important to note that the umbrella base is not weatherproof and should be stored indoors when not in use to extend its lifespan.