The item under consideration is identified as the Cascading Cup Fountain, item number 2127195. The fountain is 65 inches tall and has a 13.8-inch square base. It has a tree-like shape with metal spouted cups at the end of each metal branch. Water will cascade down the arrangement of cups to the metal base of the fountain. The top of the base is covered with decorative glass. You note that the fountain has a centrifugal pump that does not work unless it is fully submerged and that has an automatic shutoff valve in case the fountain runs dry. The fountain also has a removable drain plug that is accessible from inside the base. According to your documentation, the fountain is comprised of approximately 75% metal by weight and almost 72% metal by value as compared to the pump which comprises approximately 6% by weight and 13% by value.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N321316