The Faber-Castell Pitt Artist Pen offers all of the advantages of drawing in Indian ink in a convenient and disposable brush pen. With odourless and waterproof properties, this pen provides excellent coverage on a range of surfaces. The flexible 1.5 mm nib is ideal for different techniques and brush strokes. It can be used on a variety of surfaces including wood, paper, plastic and paint. When dry, the acid-free ink is both waterproof and odourless. This pen has excellent light fastness for long lasting results. The colour of the ink is Sepia.