Each of the tools has a groove caved into the handle, an inch away from where it meets the blade. The grooves help keep the interlocking formation in place. The audience may optionally interact with the piece.
These farming tools are called “not” in Korean and “sickle” in English.
They are harvesting tools for rice and other plants. The farmers would kneel to reach the bottom of grain plants and swing the tool away from the body to reap. It is a primitive device that’s been similarly designed across many farming cultures.
In both the East and West, people used them as weapons, usually by the working classes who were not allowed to have blades. In the former Soviet Union’s emblem, the image of the sickle is used to respectful representation of peasants.