All brass & steel construction, variety of colors and finishes & tungsten carbide ballpoint tip

The 400 series bullet space pen is the original Fisher ball point pen & most popular Fisher pen sold

Pressurized thixotropic ink cartridges are hermetically sealed & write 3x longer than ballpoint pens

Reliably performs in extreme temperatures (-30F to +250F), underwater, in zero gravity, at any angle

Precision assembled & hand-tested with a lifetime guarantee against all manufacturing defects