This refill pack features four ink colors - black, blue, red, and green - suitable for various writing needs. These refills use thermo-sensitive gel ink, allowing you to write, erase, and rewrite without damaging documents. The set includes six packs with two refills each, providing a total of 12 refills to keep your FriXion Ball 4 Multi Pen in use for a longer time. Additionally, this set comes with a "monoc" sticky note pad for quick notes and reminders. Enhance your writing experience with the Pilot Gel Ink Refills for FriXion Ball 4 Gel Ink Multi Pen value set.