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The listing specifies six packs of six cartridges (36 cartridges total), compatible with Pilot cartridge pens.

Yes, they’re designed to fit pens that use Pilot IC-50 style cartridge refills; ensure your pen accepts standard cartridges for best results.

Remove any empty cartridge or converter, insert the blue cartridge into the pen’s grip section with the neck facing down, then push firmly until it punctures and ink begins to flow.

The ink is described as quick-drying and smudge-proof on typical office papers, helping reduce smudges during writing.

Ideal for classrooms, offices, note-taking, and everyday writing tasks where a consistent blue color is preferred.

Ink is dye-based and generally safe for typical handling; avoid direct contact with eyes, wash hands after use, and keep out of reach of children.

Durability depends on how much you write; with 36 cartridges in a bulk set, you can sustain writing tasks for weeks in a busy classroom or office.

If you’re evaluating options, consider cartridge count, price per cartridge, and compatibility. For example, you can compare these alternatives on Fepy: https://fepy.com/product/pilot-ic-50-blue-cartridges-pack-12 and https://fepy.com/product/pilot-ic-50-l-1-blue-cartridges-36-count

Store in a cool, dry place, away from direct sunlight, with caps closed to prevent ink from drying.

Yes, returns are available under Fepy's standard return policy for eligible items; please contact customer support to start a return if needed.

Yes. Bulk purchases typically offer a lower per-cartridge cost and reduce the frequency of reordering, which can be more economical for classrooms or offices.