Description
- All brass & steel construction, hard chrome plating, pocket clip & tungsten carbide ballpoint tip
- Used on NASA Apollo/Shuttle missions, International Space Station, Everest North Face Ski Expedition
- 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
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