Uni Power Tank SN-220 Retractable Ballpoint Pen 1.0mm Black Box of 12

uni-ball's page says a pressurised ink delivery system enables the Power Tank pens to continue writing upside down, in extreme cold (up to minus 20 degrees), on shiny surfaces, wet paper and even underwater. That sentence names the Power Tank pens, not the SN-220 by name, and the page prints no unit for the temperature.

uni-ball publishes no altitude figure and no angle figure for the Power Tank, so we state none. Its 2026 catalogue says it writes clearly in any position and writes on almost any surface.

uni-ball's page prints SN-220 with 1.0mm, and its 2026 catalogue lists the SN-220 at 1.0mm.

uni-ball's 2026 catalogue lists a retractable body, an elastic rubber grip and a stainless steel tip. uni-ball's page says it is made with 55% recycled content and does not say which part.

uni-ball's safety data sheet lists the SNP-10 as the refill for the SN-220, and its 2026 catalogue prints SNP10 beside the SN-220. Its page lists SNP10 and SNP7 under refill compatibility for the Power Tank.

uni-ball's page names no colours. Its images are named black, red and blue and its safety data sheet lists Black, Blue and Red. This listing is the black SN-220, with the colour from the MPA price list.

The MPA price list sells this code by the box of 12. uni-ball does not state a box quantity in its own copy.

Yes. uni-ball publishes 'INK for uni POWER TANK all color', issued 12 September 2025, and it names SN-220 and its refill SNP-10. It lists a classification for the ink. We do not reproduce it here, so read the sheet on uni-ball's safety data sheet page before use.

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