Premium Formulation: Crafted using an extruded clay-wax process, these crayons are fade-proof, waterproof, and smear-proof. They are engineered to stay solid and will not melt when left in direct sunlight on the job site.

Surface Versatility: Writes smoothly and leaves bold, durable marks on challenging textures including wet (green) lumber, dry wood, concrete, structural steel, masonry, and rubber.

Design & Packaging: Features a hexagonal shape measuring 4-1/2 inches by 1/2 inch, preventing the crayon from rolling away on inclined surfaces and ensuring a perfect fit into standard lumber crayon holders. Supplied in a bulk box containing 12 crayons.