Do you feel chemistry when you think of science? If so, this TornadoRollerball is made just for you with the Periodic Table of the Elements printed on the barrel in several bright colors. Its named Dmitri in honor of Dmitri Mendeleev, the Russian chemist who is referred to as the Father of the Periodic Table, but you probably already knew that. Pick up a DmitriRollerball penand youll experience a measurable difference in kinetic energy within your writing. Retro 1951 Vintage Metalsmith series Twist top rollerball pen Periodic Table print with chrome trim Includes black ink cartridge Packaged in matching display tube