Space Pen Ballpoint Refills
Products in Space Pen Ballpoint Refills:
Fisher Spacepen Co. offers ink refills for their ballpoint pens. Each refill has formulated thixotropic ink that have been pressurized. This forces the ink to the point, ready to be use for writing. Because of this characteristic, these can be use while being upside down and even in zero gravity. Available in blue and black ink with medium points.
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