Fisher Space X-750 Black Body Writing Extreme Conditions Pen with Box 750BK

Black matte finish body. 4 7/8″ closed. Removable cap with pocket clip. Rubber grip. Pressurized ink cartridge contains visco-elastic, thixotropic, permanent type ink with smoothly polished tungsten carbide ball. Black ink. Uses Fisher pressurized refill. Gift boxed. Writes reliably under extreme conditions: over fingerprints, over grease, extreme cold (-50°C), extreme heat (+200°C), over wet paper, in a vacuum, and at any angle, even upside down.