Fisher Space Pen Turquoise Medium Ink Refill

Fisher Space Pen is the brand that put a reliable ballpoint in the hands of NASA astronauts. Paul C. Fisher developed a sealed, pressurized refill so ink flows when ordinary pens fail—upside down, through grease, in heat and cold, and in zero gravity. Decades later, Fisher still manufactures many models in the United States to the same demanding standard.

Genuine Fisher pressurized refills keep your Space Pen, Bullet, or compatible pen performing like new. The thixotropic ink and sealed cartridge are why Fisher writes where standard ballpoints skip or dry out. Match the refill series (PR4, SPR4, etc.) to your pen model for best results.

Details

Writes upside down, underwater, through grease, and in extreme temperatures.

Specifications