• The world's standard for permanent marks indoors or outdoors
• Strongest, longest-wearing crayon ever developed
• Lasts up to 10 times longer than ordinary wax or chalk crayons
• Marks lumber, steel, concrete and other rough surfaces
• Paper wrapped
• Water resistant, smear resistant and fade resistant
• Hexagonal shape 4 -1/2 x 1/2" with ground point
• Colored with highest quality clays and pigments