50th Anniversary Bullet Space Pen Special-edition pen features a Matte Black finish accented by a gold finger grip section, and from the sleek pen profile down to the unique geometric moon-cycle engraving. Writes at any angle, even in Zero Gravity. Simply the most versatile pen ever made. Writes in extreme temperatures from -30F to 250F All brass and steel construction Dimensions: 3.8 (closed 3 x 3 inches