Refill color:

EK-70 round head black single piece [please shoot in multiple of 12]]

EK-70 round head blue single piece [please shoot in multiple of 12]]

EK-70 round head red single piece [please shoot in multiple of 12]]

EK-90 square head black single piece [please shoot in multiple of 12]]

EK-90 square head blue single piece [please shoot in multiple of 12]]

EK-90 square head red single piece [please shoot in multiple of 12]]

EK-100 square head, black single [please press multiples of 6]]

ESK-20 black ink 20ml

ESK-20 blue supplementary ink 20ml

ESK-20 red ink 20ml

ESK-20-30 black refill ink