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.
Click here to view all compatible products.
Tip sizes: 0.5 mm and 0.4 mm
Length: 11 cm