A pack of three refills for the Pilot FRIXION Ball Knock Retractable Pens which are also available in store. Available in pink, orange, light green, green, light blue, blue black, and violet of single refills as well.
Note: the ink in this pen is thermo sensitive, it is not advisable for it to be left in hot cars, used for mailing, or subjected to a condition that exposes it to a lot of friction.