Fisher Space Pen SPR1B Pressurized Ballpoint Refill, Broad Point, Blue Ink

The Fisher Space Pen SPR1B refill writes in conditions where ordinary ballpoint refills fail. Its pressurized thixotropic ink flows smoothly underwater, upside down, in zero gravity, and across a temperature range from -34°C to +121°C. This broad (B) blue refill fits Fisher Space Pen models in the SPR series and delivers up to three times the writing life of a standard refill.

Highlights

• Pressurized thixotropic ink for reliable writing in extreme conditions
• Broad point (B) with tungsten carbide ball for smooth, bold lines
• Blue ink with a shelf life of up to 100 years
• Brass body for durability and consistent ink flow
• Compatible with Fisher Space Pens (SPR series)

Full specifications

• Product Type: Pen Refill
• Ink Colour: Blue
• Point Size: Broad (B)
• Refill Type: Ballpoint
• Ink Technology: Pressurized Thixotropic Ink
• Compatibility: Fisher Space Pens (SPR series compatible)
• Writing Conditions: Writes underwater, upside down, in zero gravity, and extreme temperatures
• Temperature Range: -34°C to +121°C (-30°F to +250°F)
• Refill Body Material: Brass
• Tip Material: Tungsten Carbide Ballpoint
• Quantity: 1 refill
• Ink Lifespan: Up to 3 times longer than standard refills
• Shelf Life: 100 years
• Country of Origin: USA

Final note

A single refill that turns your Fisher Space Pen into a tool for any environment—from the office to the extremes of space.