The formula is secret -- the pencil is world-famous. Staedtler's has been in the business of manufacturing artist pencils and supplies for over 180 years now, so they know a thing or two about quality and what artists of all stages need. To this day, first-class manufacturing processes and sustainably sourced materials outstanding and consistent product quality. The Lumograph is available in a wide variety of soft and hard cores for drawing and sketching on paper, canvas, wood and more. Our carbon rich lead produces any range of monochrome tones you can try, from deepest, most opaque black to delicate grays. The Lumograph line is not only an ideal creative companion for artistic and hobby uses, but drafters and even school age kids will benefit from the finest German manufacturing processes. Whether it's scientific or creative endeavors, in the home, studio, office or classroom, Staedtler helps bring ideas to life.