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Fisher SPR4 - Black Ink Medium Point Space Pen Pressurized Cartridge
Black Ink Medium Point Space Pen Pressurized Cartridge.
This is our standard 3 ½ inch Pressurized Cartridge that fits most of our pens.
The Write Out for this Cartridge is approximately 15,000 feet, depending on writing style - 3 ½ times longer than a typical ball point cartridge.