Markal Pro-Ex Lumber Crayons are clay-based, premium grade crayons that are made for heavy-duty applications where a lower quality lumber crayon can't make the grade. Pro-Ex Crayons leave long-lasting marks on a variety of surfaces such as wood, concrete, stone, metal, plastic, rubber, and more.They even leave superior marks on wet and rough surfaces. Use Markal Pro-Ex Lumber Crayons for industrial applications such as lumber, woodworking, construction, concrete, masonry, and metalworking.
* Markal Pro-EX Lumber Crayons are available in these highly visible colors: white, yellow, red, blue, orange, black, green, and brown.
Markal Pro-Ex Lumber Crayons Pink and Purple have been discontinued.
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All prices are in USD.