Didilbanga, originating from a mortar, is a treadmill fitted with a pole, which was operated by a person stepping on it to pound and crush grains. There were two types of didilbanga: one was designed for two people, one stepping on the treadmill and the other scooping overflowing grain back into the stone mortar; the other type was operated by three people, with two stepping and the other putting grain back into the stone mortar. Didilbanga for two people had a short and thin pole, while the three-person version had a long pole with a forked end like the tail of a swallow. A three-person didilbanga was made with a thick forked branch. The forked end was carved flat for stepping on, and the cylindrical pestle was mounted on the other end of the pole with wedges and straw. The end of the pestle was rounded to efficiently crush and grind the grains in the stone mortar. A hole was made on the pole close to the forked end, and the fulcrum was inserted into the hole. Since didilbanga played an essential role in daily lives aside from grinding grains, it was installed near the kitchen. Today, however, as mechanized rice mills are commonplace, didilbanga has gradually disappeared from Korean households.