This set of six UCHIDA technical drawing pens is perfect for any artist or crafter in need of precision and clarity in their work. The pens are designed for open stock use and feature a 0.3mm black ink tip, making them ideal for creating detailed and accurate drawings. Whether you’re a professional or amateur, these pens are sure to enhance your artistic experience. The model number for this set is U4100S-0.3 are also listed as 0.3mm Black. These technical drawing pens are categorized under Crafts, Art Supplies, and Drawing & Lettering Supplies, making them a must-have for any art enthusiast. Buy now to add these high-quality pens to your collection.