Simply, one of the best fineliners on the market. Staedtler's Pigment Liner for writing, sketching and drawing is a fineliner whose tip outlasts its ink supply-- no breaking at the tip. Its long metal tip also makes it ideal for use with rulers and templates. Each pen contains pigment ink that is indelible (in accordance with ISO 14145-2), lightfast and waterproof. Erasable when used on tracing paper, no bleeding when highlighted. Nice pen clip.