Koh-I-Noor Rapidograph pens have been used by artists, architects, designers, engineers and hobbyists for over 30 years to produce precise, consistent ink lines for any drawing application. Rapidograph pens from Koh-I-Noor, the only manufacturer of technical pens in North America, are the industry standard and the top selling pens of their kind because of their proven quality, reliability, and reputation. Easy to clean and maintain, the refillable ink cartridge design allows the use of a variety of drawing inks for any surface/application.Koh-I-Noor offers a range of nibs for all Rapidograph pens. If you are selecting your first Rapidograph pen, we suggest that you start with a 2x0 (0.30mm) width as it's the most versatile and widely used width for the beginner. Other popular sizes include 3xO (0.25mm) and 4xO (0.18mm). The reference chart shows the range of sizes and their corresponding line widths.
