Holbein Maxon Sketch Liner 5-Line Width Set Used only once to test the lines, almost unused. For illustrations and designs. Please refrain from purchasing if you are sensitive. These are ruling pens ideal for sketching and design. This is a set of 5 pens with line widths of 0.05/0.1/0.2/0.3/0.5mm. ●Water-based pigment ink (water-resistant/lightfast): Because it is pigment ink, there is almost no discoloration, and it becomes water-resistant when dry. ●Efficient direct ink system: Allows for clear drawing until the very end. ●Needle point: Enables uniform line drawing regardless of writing pressure or wear.