The Faber Castell Drawing Pen Set features four shades of 1.5mm pens, perfect for creating precise and detailed drawings. These pens are made with high-quality materials and utilize a unique ink flow system for smooth and consistent lines. With a variety of shades to choose from, this set is perfect for artists of all levels looking to add a professional touch to their artwork. The pens are also acid-free, fade resistant, and quick-drying, making them ideal for use in art journals, sketchbooks, and other projects. Elevate your drawing experience with the Faber Castell Drawing Pen Set.