Artline Technical Drawing System for sketching, illustration, and design. The polyacetal resin tip provides precise and clean writing. Available in various writing widths: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.8mm. The durable tip allows you to draw with a consistent line thickness. With a metal reinforced collar, suitable for rulers and...