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Feature

Can be written tightly ball without slipping, it is oil-based ballpoint pen knock type.
Can be written in the up!
The writing also to the paper wet and space with no gravity!
You can visually confirm the decrease of the ink with a transparent pressure refill.
Japan Import

Description

The Power Tank pen is worthy of being used either in the military or excursions to Antarctica. The pen writes in extreme conditions including wet surfaces, cool temperatures, and even upside down. Normal pens utilize gravity to create ink flow onto a paper. But the Power Tank utilizes internal compressed air pressure to push out ink onto the paper. Revolving air inside allows it to continually push ink out until the end. The pen can write in weightless conditions such as in space, on wet paper and subzero environments. The oil based pigment ink is high density and comes out smooth and dark on paper. You can write super fast without skipping or scratching the paper.