Rollerball Conversion Kit

Sometimes you just fancy a different kind of glide. This Rollerball Conversion Kit swaps your Studio Fountain Pen's nib unit for a smooth rollerball mechanism, so the same pen you already own can write two completely different ways. No new pen to buy, no tools needed - just unscrew your nib unit and twist the rollerball mechanism in. Switch back to fountain pen writing whenever the mood (or the ink) takes you.