Fisher Space Pen Men's Original Astronaut Space Pen Made in USA 1" high Writes at any angle, even in Zero Gravity. Simply the most versatile pen ever made. Writes in extreme temperatures from -30F to 250F. Length-5.0 inch. Diameter- 0.375 inch Each Fisher Space Pen is precision assembled, hand tested, and carries a lifetime guarantee against all manufacturing defects Each Fisher Space Pen is precision assembled, hand tested, and carries a lifetime guarantee against all manufacturing defects Sold in original box from the manufacturer