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. Made with 55% recycled content.
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. Made with 55% recycled content.
