Lyra Aqua Brush Duo Set of 24 is a set of fibre pens with a brush effect for artists, designers and for amateurs of all ages. The fibre tips are extremely strong and do not fray. There is a broad tip on one side, which allows brush-like techniques. Fine lines and drawings are easy to create using the other side, the Aqua Brush Duo. It allows you to create perfect pictures, plans etc. The inks are water-based, free from hazardous solvents, are lightfast and can be mixed.