Fisher - Ballpoint Refill - Pressurised - Black - Medium
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The Fisher pressurised ballpoint refill writes in temperatures from below zero to extreme heat, underwater, in zero gravity, and at any angle including upside down. Hermetically sealed and pressurised with nitrogen gas, with a tungsten carbide ballpoint tip. Fisher ink is a gel that only flows when pressure is applied to the ballpoint.
Black ink, medium tip (1.1mm).







