fisher SPACE PEN® Refill for Fisher Space Pen, Medium Point, Black Ink

Developed for astronaunts and are the ultimate in dependability. The only NASA approved pen and has been on all manned space flights. Writes upside down, under water and in extreme temperatures (-30 to 250 degrees).
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Developed for astronaunts and are the ultimate in dependability. The only NASA approved pen and has been on all manned space flights. Writes upside down, under water and in extreme temperatures (-30 to 250 degrees).