Five mil-spec toggle switch/titanium switch guard sets made for the Space Shuttle by Applied Resources Corporation of Fairfield, New Jersey. Includes four two-pole switches (one with "On-Off-On" positions and three with "Mom [Momentary]-Off-Mom" positions) and one four-pole switch (with "On-On" positions). These hermetically sealed switches are water-shock-heat-vibration proof—each one an engineering work of art. Each set is housed in a plastic container with "Made in USA" hologram and label identifying part/serial numbers.