Ideal for classrooms and laptop whiteboards. Designed specifically with children in mind. Fast drying and low odour ink, which can be left uncapped for days without drying out. Xylene and toluene-free ink. Universal tip with 1-2mm line width. Assorted pack 36 contains blue, green and red. Assorted pack 144 contains 72 black, 24 blue, 24 green and 24 red in a Gratnells tray.