The uni-ball Power Tank pens pressurised tank makes it the pen for even the most extreme conditions. The Power Tank allows you to write in temperatures as low as -20C, upside down, on wet paper it will even write in zero gravity should you ever require it to. A rubber grip provides comfort and this retractable ballpoint pen just wont let you down. 1.0mm ball. Available in black and blue. 12 x uni-ball Power Tank Ballpoint Pens.
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