12 Pack Irwin 66406 Strait-Line 4-1/2″ Yellow Marking Lumber Crayons
$19.16For use on oily, slick, rainy, chilly, or dry surfaces. Perfect for marking lumber, concrete, ceramics, rubber, steel, paper, and cardboard. Wax-based totally crayons are non-poisonous and water resistant. Marks are climate-resistant.