Sets the standard for lumber crayons. These extruded lumber crayons last up to 10 times longer than ordinary molded wax crayons. They're fade-proof, water-proof and smear-proof. Won’t melt in direct sunlight and works on wet (green) or dry lumber, metal or concrete. Hexagonal shape fits lumber crayon holders. Color(s): Carbon Black; Color Family: Black; Crayon Size: 4.5" x 0.5"; Size Group: Large.