Fisher Space Pen Pressurised Refill (SPR)

The genuine Fisher pressurised ink cartridge that makes a Space Pen a Space Pen. Sealed and pressurised with nitrogen, it writes upside down, underwater, over grease and in extreme temperatures, with a shelf life measured in decades. Fits all Fisher Space Pens that take the standard SPR refill – Bullet, Cap-O-Matic, Astronaut, Shuttle, Backpacker and more – and many other pens that take a Parker-style refill.

Details

• Type: Pressurised ballpoint refill
• Ink: Thixotropic, sealed under nitrogen pressure
• Writes: Upside down, underwater, over grease, from -35°C to 121°C
• Item code: FSPR1, FSPR1B, FSPR1F, FSPR2, FSPR2F, FSPR3, FSPR3F, FSPR4, FSPR4B, FSPR4F, FSPR5, FSPR6, FSPR8, FSPR9, FSPRSL