To mark easily on tough surfaces, use C.H. Hanson's El Marko® Traditional Yellow Lumber Crayon. This crayon creates distinct and readable marks, and works perfectly with wood or concrete. Extend the life of your crayon by investing in Crayon Armor, the best casing to protect your lumber crayons.
Non-toxic
Waterproof
Marks on wood, metal, and concrete
Measurements: 1/2" wide x 4 1/2" working life with Crayon Armor®.
