Erasable Gel Pens Multicolour 0.5Mm for Writing, 4 Colour Pen (Blue, Black, Red,
Ink Colour Multicolor. Ink colour Multicolor. 4 Colours in 1: Say goodbye to constantly changing pens. This SimSign gel pen combines four colours—blue, black, red, and green—in one. Colour blue, black, red, green.