Pilot FriXion Point 0.4 Erasable Gel Pen Blue Ink Refill(LFRF30P4-3L), 3 Refills X 3 Pack/total 9 Refills (Japan Import) Refill for Pilot FriXion Point Erasable Gel Pens, 0.4mm, Blue(LF-22P4-L) Ink color: Blue The diameter of a ball: 0.4mm. Fine Point.