The base of the hollow molded ear drum 2 pairs for string for hanging, or a quarter. The drum is flat Usually there's a frog or tadpole at the top cover. Drums are often vastly different call out the form, and the faith of the people in the local area, including northern Thailand. And called on Burma Frog or tadpole gong gong Because there's a frog or tadpole appears on Chinese drums called Ku Tung (Tung Ku) English Bronze drum called Kettle drum or drum because it is shaped like a bronze which is used to boil water. The Thailand we called or save or vastly which called it varies in each period. Drums are vastly used in rituals, beliefs. A culture that is found in many different areas. Of Southeast Asia such as Vietnam, Laos, Myanmar, Thailand, Malaysia, the Philippines, Indonesian, etc.