Lightfast and waterproof pigmented ink. Stainless steel casing of the fibre tip for precise drawing line with available line-widths 0.1mm (AH80001) / 0.3mm (AH80003) / 0.5mm (AH80005) / 0.7mm (AH80007). Ideal for drawing using rulers and templates and great for writing as well. The ink feeder system ensures a constant ink supply until the last drop. No spilling or interruption of lines. With ink-control window, rubber grip for secure holding of the pen and colour coding for each line width.