**Feature** Pilot Petit Pen Refill Cartridge Water-based ink Ink color: Black， Red， Blue， Blue Black， Baby Pink， Apricot Orange， Apple Green， Clear Blue . One pack for each color. Three cartridges per pack. Total of 24 cartridges. Pilot Petit Pen Refill Cartridge. Water-based ink. Ink color: Black， Red， Blue， Blue Black， Baby Pink， Apricot Orange， Apple Green， Clear Blue . One pack for each color0 Three cartridges per pack. Total of 24 cartridges.