Ballpoint pen Rystor FUN refillable cartridge blue 0.3 mm, pack of 4

Rystor FUN ballpoint pen set includes four refillable pens with blue ink and an extra-fine 0.3 mm tip. Designed for precise writing and neat lines, these compact pens are suitable for detailed note-taking, sketching and everyday tasks. Each pen accepts interchangeable cartridges, allowing extended use and reduced waste compared with disposable models. The blister pack contains four ready-to-use pens for office, school or home.

Advantages

The slim 0.3 mm tip produces consistent, fine lines that improve legibility on printed forms and narrow-ruled paper. Refillable cartridges make these pens economical and practical for regular use. The balanced, lightweight barrel supports controlled handwriting during long sessions. Blue fast-drying ink reduces smudging on most common paper types.

Suitable for

• Precise note-taking and annotations
• Technical sketches and drafting
• Everyday office and school writing
• Filling forms and writing on narrow-ruled paper

Key specifications

• Ink color: blue
• Tip size: 0.3 mm (extra-fine)
• Pen type: refillable ballpoint
• Pack contents: 4 pens
• Barrel: compact, lightweight design
• Ink behavior: fast-drying, low-smudge

How to use

Remove the pen cap and begin writing with the 0.3 mm tip for fine, controlled lines. When ink runs low, open the barrel according to the visible seam, replace the spent cartridge with a compatible refill, then reassemble the pen. Store pens capped when not in use to prevent tip drying and keep at room temperature away from direct sunlight.

Usage recommendations

For best results, use high-quality, compatible refill cartridges designed for compact ballpoint barrels. Allow a short drying time on glossy or coated papers to avoid smearing. If the tip skips, gently scribble on scrap paper to re-establish ink flow before replacing the cartridge.