Fineliner pens containing indelible ink for writing, sketching and drawing. The ink is lightfast, waterproof, chemical and solvent-resistant, smudgeproof and non-erasable, making it ideal for use on cheques, documents and contracts. The ink does not bleed when highlighted and is erasable when used on drawing film. The pen can be left uncapped for 18 hours without drying up and is airplane-safe as the automatic pressure equalisation prevents pen leakage. The long metal tip is ideal for use with rulers and templates and is available in 9 line widths, including the extra fine 0.05mm.