Carbon: Made from the perfect combination of charcoal powder, graphite (graphite) and oil and wax, Carbon is a pencil for sketching and professional drawings where special strength is required for strokes. Lead Diameter: 5mm Pencil Diameter: 8.5mm Cross Section: Round Wood Shaft: Natural Cedar Finish: Black Lacquer Mat Print: Silver Dipping: Gloss Black Dome: Gloss Black