Dixion

Dixon Lumber Crayons last up to 10 times longer than ordinary molded wax crayons.
Fade-proof, water-proof, and smear-proof.
Can be used on wet (green) lumber or dry wood, metal, concrete, and most other surfaces.
Individually UPC coded for easy identification and tracking.
Hexagonal shape (4-1/2 x 1/2 inches) to fit lumber crayon holders.
PMA Certified Non-toxic.
12-count pack