Koh-I-Noor Rapidograph Technical Pens are made of impact and chemical-resistant components for universal use with drawing and specialty inks. Each cap has a pocket clip and an air-tight double-seal liner. They feature long streamlined holders for good balance. Koh-I-Noor Rapidograph pens are available in a variety of line width sizes with either stainless steel points or jewel points.
•The self-polishing stainless steel points are for use on paper and drafting cloth.
•The self-polishing sapphire jewel tips have 30 times longer life than a stainless steel point on drafting film. Jewel points produce more uniform line widths due to superior whetting characteristics. May also be used on paper and cloth.