Pilot Frixion Ball Erasable Black Gel Ink Pens, 3 Pens with 2 Packs of Refills (315505P) Deal includes: 3 each Pilot 31550 FriXion Ball 0.7mm Erasable Black Gel Ink Pens, plus 2 packs of black erasable gel ink refills with 3 refills per pack. FriXion ball pens have a unique Thermo-Sensitive Gel Ink Formula that disappears with erasing friction. Rewritable-erase and rewrite repeatedly without damaging documents - No wear or tear!