ROtring was born in 1928 in Germany at a time when the art and architecture was reflected deeply in Bauhaus Design School in Germany. Based on the belief that "precise lines are beautiful" and the philosophy of "art in the industry" by Bauhouses, we have worked a number of products that are minimalistic, yet high performance. The process of creating ideas that creators and engineers have gone through the same time as the times change. And when inspiration comes out, you can visualize your shipment and expand your imagination infinitely rOtring follows this process and continues to support the creation of professionals The 600 series has become an iconic item from rOtring since its birth in the 1980s Full metal body with moderate weight and excellent stability. Mechanical pencil can be switched between 4H and 2B depending on the type of lead you use 600 Mechanical Pencils come in two colors: black, silver. 0.3 (0.35) 0.02 inch (0.5 mm) 0.03 inch (0.7 mm) Drafting Support