Pilot Frixion Gel Ink Pen Refill 05, Black(LFBKRF30EF3B), 0.5mm, 3 Refills X 3 Pack/total 9 Refills (Japan Import) [Komainu-Dou Original Package] Extra fine point (0.5mm) Ink color: Black Thermo-Sensitive Gel Ink formula disappears with erasing friction Reasonable set. Total 9 Refills.