Fisher Space Pen Tec Touch, Black Gift Boxed (TECTD/B) Conductive Stylus tips on each end are ideal for touch screen cellular smart phones and tablets. Type faster with greater accuracy, reduce smudges, scratches and oil marks. Replaceable tips. One stylus tip is medium and the other fine, for multiple applications. Writes Underwater, Upside Down & At Any Angle, Over Grease, 3X Longer Than an average Pen. Also writes in Extreme Temperatures (-30 Degree to 205 Degree). Each Fisher Space Pen is precision assembled, hand tested, and carries an unconditional lifetime guarantee. Aluminum and Brass construction