Fisher Space Bullet Space Pen， Black Titanium Nitride (400BTN)[Product Information]- Enter your model numberto make sure this fits.
- 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.
- All Brass and steel construction
