The Apollo toolset provides multipurpose tools and/or attachments for mechanical actuations and valve adjustments. This component is labeled: Tool W - Midget Ratchet Wrench. The midget ratchet wrench function is to drive attachment tools 1, 2, 3, and 4 included as part of the tool kit.
This set was used during the Apollo 11 mission and NASA transferred it to the Smithsonian in 1970.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.