Livework's Twin Highlighter Pen Set includes 5 double-ended pens each with 2 different ink colours, totalling 10 different ink colours. Colours are yellow, light yellow, green, spring green, pink, rose pink, sky blue, sea green, purple and orange. The nibs can be used to draw thick & thin lines and the colours can be blended together to create even more variety. The pens come in a transparent, plastic storage case. View Picture Gallery.