Paul Fisher developed the original bullet shaped pens almost 60 years ago. In July of 1948 Mr. Fisher machined the first bullet pen shaped from solid aluminium. Open, the Bullet measures 5.3 inches, with a closed length of 3.7 inches. All the Bullet Space Pen series contains a SPR4 Black Ink, Medium Point Refill. Gift Boxed.The Bullet Pen was exhibited in the New York Museum of Modern Art as an outstanding example of industrial design.