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Uni-Ball Power Tank SN-220 1.0mm nib Blue inkThe Power Tank RT can write clearly upside down, in minus temperatures and on wet paper without blurring
The ideal pen for those who work outside or enjoy outdoor leisure pursuits
Additional features are a comfortable grip that cushions fingers, a convenient retractable function for easy use in more challenging conditions and a useful ink supply monitor.
Pack of 3 BLUE INK