Fisher Space Pen Military Pen

• Replaceable pressurized ink cartridge continuously feeds ink to the tungsten carbide ball, allowing pen to write at any angle--even upside down
• Thixotropic ink writes smoothly and dependably on most surfaces, even under water, on photographs, in freezing cold, extreme heat and in space!
• Stainless steel, precision-machined socket prevents leaks and oozing yet delivers uniform ink flow
• Revolving ball liquefies the ink so that it writes more smoothly, more dependably and longer than most pens
• Medium point, black ink

Made in USA.