• Pressurized ink cartridge continuously feeds ink to the tungsten carbide ball, allowing pen to write at any angle--even upside down
• Visco-elastic ink writes smoothly and dependably on most surfaces, even under water, over fingerprints, in freezing cold, extreme heat and in space!
• Stainless-steel, precision-machined socket prevents leaks and oozing, yet delivers uniform ink flow
• Small, compact design fits almost anywhere; measures 3.75 inches and weighs less than 0.2 ounces
• Ink will not dry out for over 100 years
• Black ink; medium point
• Since 1967, Fisher Space Pens have been used by American astronauts on all manned space flights

Made in USA.