4 Pitt Artist Brush Pens - Primary LetteringThese Pitt Artist Brush Pens by Faber Castell featue a brush tip with different thicknesses and use Indian ink. Odourless, permanent, fade- and sclayge-resistant. In contrast to traditional felt tips, these pens don’t seep through your paper. Work great on a variety of surfaces: plastic, wood, fabric, EVA rubber, etc.- Contans: Indian ink- High-resistance to fading- Water-resistant, permanent.- Neutral odour, acid-free, pH neutral.- Available in 60 colours