CARBON EXTRA DARK: A good blend of high concentration of chyacol powder, graphite (graphite) and minimal carbon black pigments to bring out the clarity of the plack. It is recommended when drawing strong images while clearing the three-dimensional look and deep black parts. Lead Diameter: 5mm Pencil Diameter: 8.5mm Cross Section: Round Wood Shaft: Natural Cedar Finish: Black Lacquer Gloss Print: Silver Dome: Matte Silver