Pilot FriXion Ball Knock Retractable Gel Pen Refill

It's filled with Pilot's unique thermo sensitive gel ink that flows smoothly and consistently. The heat generated by friction when rubbing the paper with the rubber tip of Pilot Frixion pen turns the ink invisible.

Pilot FriXion Point Knock Gel Pen Refill - 0.4 mm - Black - Pack of 3

Refills for Pilot FriXion Ball Slim 0.38mm Erasable Rollerball pen, 10 Colours

Frixion Erasable Pens

Pilot FriXion Ball Knock Retractable Gel Pen - 0.7 mm - Black

Pilot FriXion Ball Knock Erasable Gel Pen 0.5mm 10 Colors — A Lot Mall

Pilot FriXion Point Knock Gel Pen Refill - 0.4 mm - Black - Pack of 3

PIL77330, Pilot® 77330 Refill for Pilot FriXion Erasable, FriXion Ball, FriXion Clicker and FriXion LX Gel Ink Pens, Fine Tip, Black Ink, 3/Pack

Pilot FriXion Ball Knock Retractable Gel Pen 0.7 mm – Bumbo Stationeries

Pilot FriXion Point Knock Gel Pen Refill - 0.4 mm - Black - Pack of 3

Pilot FriXion Ball Knock Retractable Gel Pen Refill - 0.5 mm - Pack of – Kawaii Pen Shop