Genuine Fisher ink pen refills
Given the importance of the ink cartridge, it is important that you use only genuine Fisher ink pen refills in your space pen. Fisherspacepenstore.com carries not only a full line of replacement ink but also the other accessories you want such as clips and replacement erasers and leads for your multifunction pens. You will also find other incredible Fisher products such as the Space Blade and Space Beam LED spotlight.
From AG7 to the Bullet pen
No matter what the model, from the sleek styling of the Bullet pen series to the original AG7 astronaut pen, there is only one Fisher space pen! Carried on every NASA mission and many Russian missions since 1968, these pens have set a benchmark for quality among writing instruments. They can be used at any angle, even upside down, and even in zero gravity. They even write underwater! The secret is that every Fisher pen, from the Bullet pen to the convenient four inch Stowaway and even the Cap-o-Matics you will find at Fisherspacepenstore.com for less than $10, utilizes the innovative Fisher ink cartridge.
To prevent leaking, genuine Fisher cartridges and ink pen refills employ a semi-solid ink. It only flows when the rolling action of the pen's ball liquifies it. Instead of relying on gravity, as other writing instruments, the ink is stored in a pressurized cartridge that forces a small ball against the mass of ink. This keeps the ink supply firmly against the pen's point and ready for writing! This system is behind the amazing performance of the original space pens. These pens are used now not only by astronauts but by anyone who needs a reliable, durable writing instruments.