Faber castell pitt artists brush pensare ideal for drawings and plans and can also be used for sketching writing or adding bright details to projects the pen is very durable and will last you a long time if looked after correctly and not left open the faber castell pitt artists pens have waterproof light fast ink ensuring your project will stay perfect regardless of light time and humidityfaber castell pitt artists pens are available in 48 bright and vibrant colours waterproof unsurpassed