Refill for Fisher Space Pen SPR4 - Fine, 0.9 mm

Refill for Fisher Space Pen from the PR (Pressurized Refill) series with a line width of 0.9 mm, lasts three times longer than ordinary refills. Each refill writes more than 3 600 m depending on the surface and writing style. The model fits all pens offered by the manufacturer, except for Q4.

The set includes a white adapter that extends the refill by an additional 2.5 cm, so that it fits Parker pens and other similar ones.

Features:

• Writes 3 times longer than an ordinary refill;
• Writes underwater, at any angle, and at temperatures from -35° C to 121° C;
• Very hard tungsten carbide ball;
• Thixotropic ink, hermetically sealed in a pressurized reservoir;
• Moving internal separator, separates the ink from the pressurized nitrogen;
• Includes an adapter that fits Parker pens;
• Various colours and writing widths available (medium);
• Refill length: 8.9 cm;
• Cap length: 2.5 cm;
• Line width: 0.9 mm;
• Ink colour: black.