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This tool is a pulley/grappling hook that allows astronauts to hook onto things in the space station then hang from a cable in microgravity. It consists of a brace that goes around the wrist with a small pulley attached that goes beneath the wrist. Connected to the pulley is a 3D printed cable, the end of which is attached to a small loop that can easily latch on to things within the ISS.
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