"4 x Black Refills for a black-ink ballpoint pen that writes on any surface in any conditions, even upside down.
The versatile ballpoint pen is perfect for carpenters, plumbers and other professionals, but equally useful at home. The pen has a unique pressurised ink system that allows ink to flow steadily and smoothly, even upside-down. Incredibly durable and lightweight, the pen can even write on wet surfaces.
~Anywhere Pen//P14847~ also available."