The transitional design on this DC America Interlock Pattern 19 diam. in. Round Cast Stone Umbrella Base makes it a handsome choice for holding your patio umbrella. It's made of cast stone composite materials for extreme weather resistance and is graced by a bronze powder-coated finish that brings out each raised detail. This umbrella base fits a 1.5-inch umbrella post with a plastic insert and up to a 2-inch patio umbrella without the insert.