Fisher Space Pen, Millennium II Space Pen with Black Ink, Gold Titanium Nitride and Chrome (2010GTN-4) Writes at any angle, even in Zero Gravity. Simply the most versatile pen ever made. Writes in extreme temperatures from -30F to 250F Each Fisher Space Pen is precision assembled, hand tested, and carries an unconditional lifetime guarantee. You can write a continuous line over 30 miles long - which is enough to last the average person for 80 years. It's made of the finest quality materials in the USA. Featuring a special kind of ink which requires less to write smooth bold lines, a tungsten-carbide ball point that will last three lifetimes and a larger ink chamber to hold enough space pen ink to last you forever