uni-ball - Power Tank RT Ballpoint Retractable Pen, Black Ink, Bold - 12 Pack
Writes on wet paper, upside-down, in temperatures as low as -20 °C, and even in zero-gravity. Pressurized ink tube allows it to write smoothly in extreme conditions. Features Uni-Super Ink that helps prevent against check and document fraud. Textured rubber grip provides extra comfort and control. Semi-transparent barrel lets you monitor the ink supply.
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