Lightfast and waterproof pigmented ink. For fine, accurate lines. Perfect for drawing with rulers and templates. Serves for writing too. Colour coded for all line widths. Available in a range of sizes: 0.1mm (AH23501), 0.2mm (AH23502), 0.3mm (AH23503), 0.4mm (AH23504), 0.5mm (AH23505), 0.7mm (AH23507), 0.8mm (AH23508)