The Monaco cast aluminum base is crafted for commercial and residential applications. Convenient dual wheels and an open handle are incorporated into the round contemporary design to easily move your shade on 2 wheels. The Monaco is equipped with the exclusive patented dual purpose stem for versatility and superior stability. A cast aluminum shell construction is coupled with a cast iron core for durability against the weather. It is very important to check the umbrella base weight requirement for your umbrella. Before assembly, decide on the location of the umbrella. Allow ample height to avoid damage to your umbrella during assembly and usage. Choose a location that is level and sturdy. Avoid any sloping or soft ground.