CRETACOLOR NERO CARBON POCKET 7 PIECE ASSORTED TIN SET. An assortment of Nero carbon sketching and drawing products. Nero carbon products are shiny black, oil-based, water resistant and smudge proof. Set contains one each of deep black Nero pencils in extra soft, medium and hard, two 7 x 7mm Nero sticks, a 7 x 14mm Nero stick and 0.4mm natural charcoal.