Quality, Permanent, Waterproof Coloured Pencils. Ideal For Use On Almost All Surfaces Including Glass, Metal, Wood, Leather, Stone, Plastic And Paper. Colour-Intensive And Lightfast With Non-Corrosive Colour Pigments. Comes Sharpened. Pefc: Produced With Wood From Sustainably Managed Forests. Dry marker, permanent Waterproof wood-cased pencil in up to 6 colours For opaque marking on almost all surfaces even on dark or transparent ones, e.g. paper, plastic, metal, glass, wood, leather and stone No bleeding through paper Non-corrosive colour pigments Wood from certified, sustainably managed forests