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. Each crayon is individually UPC coded. Hexagonal shape fits lumber crayon holders. Crayon Type: Lumber; Global Product Type: Crayons-Lumber; Color(s): Carbon Black; Assortment: N/A.