Extra black ink refill - For the Fisher Space Pen
It writes 3 times longer than a classic refill
The FISHER SPACE PEN has an hermetically sealed cartridge filled with ink which has an elastic viscosity similar to chewing gum. This ink is maintained under pressure by compressed nitrogen which allows the pen to write even when held upwards.
The FISHER SPACE PEN does not blot or smudge and writes on any kind of surface whether shiny, greasy or damp. The ink is usable for at least one hundred years and the pen can write three times more than a classic style pen.
This pen can write the equivalent of one and a half million letters or characters.