Since 1967, Fisher Space Pens have been used on all manned American and Russian space flights, but this special edition of the NASA-approved writing instrument was created in honor of the fiftieth anniversary of the first moon landing. Measuring 3½" when closed and expanding to 5½", the sleek ballpoint pen writes in smooth black ink underwater, in extreme temperatures, and at any angle—even upside down in zero gravity!—thanks to a specially customized ink cartridge. Gleaming metallic details include the moon phases on the pen's matte-black shaft. Packaged in a clear, snap-close storage case, it's an "out of this world" gift for the space nut you know.