This base is very, very heavy. I had a very hard time unpacking it. It was missing one part but the manufacturer was very responsive to resolving that problem. Since the base is so heavy it is very hard to assemble by one’s self. It weighs 40 lbs and is very awkward to put it together without help. What I like about this base is there are two screws and a very heavy base to keep your umbrella very secured against wind.