Pilot Frixion Ball Zone Gel Pen Refill 0.5mm LFBKRF50EF- 1 pack

• Pilot Frixion Ball Zone Gel Pen Refill 0.5mm LFBKRF50EF- 1 pack of 2pcs ink refills.
• Model: LFBKRF50EF
• 0.5mm
• One pack includes 2pcs 0.5mm refills featuring Pilot’s “Ver.2” Premium Frixion ink, which is 30% more vibrant than the original black frixion ink.
• Premium Frixion ink refill holds 70% more ink capacity than original Frixion refills.
• Ink refills for Pilot Frixion Ball Knock Zone Retractable Gel Pen 0.5mm LFBKZ-50EF.

Frixion pens use a special thermosensitive ink that turns invisible when rubbed with the built-in friction “eraser.”
The ink will also disappear if exposed to temperatures above 60°C, the ink will become colorless so we advise not to use it on legal or official documents.
Erased frixion ink reappears if placed in a freezer or exposed to temperatures below -10° C.