Premium 230 Drawing System Pens Set - 0.1mm, 0.3mm, 0.5mm & 0.7mm Fine Tip Technical Drafting Pens for Architects, Engineers & Artists - Black Ink 4-Pack - Perfect for Sketching, Blueprint Work & Detailed Illustrations

Water Resistance The highest levels of water resistance are assured with our proprietary, top-quality pigment ink. Metal Reinforced Collar Nib The metal reinforced collar is ideal for ruler and template work without causing any nib damage. Acid Free Ink acid-free, minimizing and nearly eliminating fading over time. AP Certified This product is certified AP compliant, meaning it has been evaluated as nontoxic for both children and adults. Illustrators/Designers Students Architects AVAILABLE IN 9 NIB SIZES With a variety of writing widths to choose from, Artline Drawing System Pens are ideal for all your technical drawings, including drafting, illustrating, and graphic design.

Drawing System Pens High-quality technical drawing sketch pens for drafting, illustrating, and graphic design. A complete toolkit for aspiring and experienced artists alike

Reinforced Metal Collar The ink pens for drawing nib have a reinforced metal collar around the nib, making it suitable for use with rulers or templates while minimizing tip damage

Fade Proof and Water Resistant These black markers durable ink is fade-proof and highly water-resistant, which ensures lasting impressions

Acid-Free The art pens ink is acid-free, so you can expect your work to last longer, your lines to stay sharp, and maintain color intensity for a long time

About Us Beginning 100 years ago as ink chemists, we remain dedicated to developing and producing the highest-quality proprietary ink formulas available, making our meticulously designed markers and writing instruments distinct from the competition and immensely popular in 90+ countries worldwide; The difference is the ink