Refills for Pilot's FriXion Synergy Knock and FriXion Point Knock erasable pens, with a fine 0.4 mm tip. Three in a pack, all one color.

The Synergy tip joins a cone tip, which carries plenty of ink, to a slim pipe tip for precision, so tiny writing stays crisp and the ink keeps flowing. Like all FriXion ink, it turns clear when you rub it with the pen's rubber end, so a mistake disappears without eraser crumbs.

Why people love it
- Sharp, fine lines for small planner boxes and margin notes
- Erase and rewrite on the same spot as often as you like
- Keeps a favorite pen going for a fraction of a new one

Details
- Tip: 0.4 mm Synergy tip
- Ink: FriXion erasable gel ink
- Length: 111 mm
- Fits: FriXion Synergy Knock (0.3, 0.4 and 0.5 mm) and FriXion Point Knock 0.4 mm
- Pack: 3 refills