Premium Formulation: Built using an extruded clay-wax process that makes each crayon completely fade-proof, waterproof, and smear-proof. They are temperature-stable and will not soften or melt when exposed to direct sunlight on the job site.

Surface Versatility: Writes smoothly and leaves vibrant, long-lasting marks on a wide variety of rough materials including wet (green) lumber, dry wood, masonry, concrete, and structural steel.

Design & Packaging: Formatted into a hexagonal shape (4-1/2" x 1/2") to ensure it won't roll away on uneven workspace surfaces and to guarantee a perfect fit in standard walnut lumber crayon holders. Supplied in a box containing 12 crayons.