This Uni Power Tank Ballpoint Pen Refill allows you to restock the ink supply in your Uni Power Tank Pen. The refill features a pressurised ink delivery system which allows you to write upside down, in extreme temperatures, on wet pages and even underwater.
- It is compatible for use with your Uni PowerTank Ballpoint Pen.
- The special ink delivery system allows you to write in extreme environments.
- This refill has a 1.0 mm nib size.
- This refill contains blue ink.
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