The Staedtler Lumograph Mars 100 5H graphite pencil offers an extremely hard and fine line for high-precision technical drawing and architectural sketching. Made with a graphite lead bonded to the entire length of PEFC-certified wood, the 5H grade ensures fine, clear lines that don't smudge easily when erased. The high-quality wood facilitates sharpening without breaking the lead. Indispensable for engineers, technical draftsmen, and architects.