This is a set of Pilot Frixion 0.5mm refill cartridges, totaling 9 pieces: 4 black, 3 red, and 2 blue. One bag each of red and black are new and unopened. One black bag has 1 refill remaining after using 2, and the blue has 2 refills remaining after using 1. I no longer plan to use these, so I'm hoping someone else can use them. - Brand: PILOT - Model: Frixion Ball 0.5mm - Colors: Black, Red, Blue - Quantity: 9 total - Material: PP