Faber castell pitt black artists superfine pen is ideal when you need to add extremely fine details and lines to your project the pen is perfect for sketches studies or ink drawings as well as a finishing touch to your paintingsthis pen is very durable and will last you a long time if looked after correctly and not left open the faber castell pitt black artists superfine pen has waterproof light fast ink ensuring your project will stay perfect regardless of light time and humidityit is als