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Designed for Fisher's Space Pens, these original factory refills use the Pressurized Refill Technology used by NASA. It will write down to -50 degrees Fahrenheit and up to +250 degrees Fahrenheit. Write upside down, over grease & fingerprints…even underwater!
Available in Fine point only in black, red or blue.
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Product Features
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Writes upside down, under water and in extreme heat and cold temperatures
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Available in black, blue & red ink with a fine point
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Product Specifications
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SPR
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