Box of 3 Oily Charcoal Pencils Nero 461 04 Cretacolor 3.8mm Hard Lead Nero is a grease pencil for artists, with an intense black line and a shiny appearance. It is sold in packages of 3 units to guarantee its safety and that its leads do not break. Lead of Ø 3.8 mm. Pen size Ø 7.5 mm and 174 mm in length. Contains 3 pencils. Hardness: hard. Brand: Cretacolor.