The plate is an octagon and made of steel. The base plate is 350*140*12mm. It weighs 5.500kg. It is used for complete-set wall. This base plate helps the complete-set wall panel, WB261-04, to maintain balance and increase overall stability. WB261-04 with two steel bases use can be independent of the complete-set wall. The base is reusable. The base can be used when wanting to remove a separate panel from the complete-set wall panel structure to form an independent complete-set wall. The base’s designing is for maximum utilization of the wall panel. If you have the demand for Steel Base, LingTong will provide the component separately or on the extrusion and send them for you together.