The Fisher Bullet Space Pen writes at any angle upside down underwater and in harsh temperature conditions (hot and cold). When closed this pen slightly resembles a long bullet and it is this design that has been exhibited for a number of years by New York s Museum of Modern Art as an outstanding example of contemporary industrial design. Each Fisher Bullet Space pen comes in an attractive gift box with a small pamphlet that provides the interesting history of the Fisher Space Pen. Open the Bullet measures 5.3 inches with a closed length of 3.7 inches. All the Fisher Bullet Space Pen Series contains a PR4 Black Ink Medium Point Refill.