Industrial Formula: Built with an extruded clay-wax matrix, these crayons are fade-proof, waterproof, and smear-proof. They are highly temperature-stable and will not melt or soften when exposed to direct sunlight on the job.

Surface Flexibility: Specially formulated to leave sharp, clear lines on a wide array of challenging textures, including wet (green) lumber, dry wood, structural steel, concrete, and masonry.

Design & Packaging: Styled in a standard hexagonal shape (4-1/2" x 1/2") to prevent rolling on uneven surfaces and to ensure a perfect fit into your Dixon wood crayon holder. Supplied in a box containing 12 crayons.