Irwin 66404 Strait-Line 4-1/2" Black Marking Lumber Crayon
• For use on oily, slick, wet, cold, or dry surfaces
• Ideal for lumber, concrete, ceramics, and metal
• Non-toxic, waterproof
Non-toxic waterproof marking crayons. For use on oily, slick, wet, cold and dry surfaces. 4 1/2" hexagonal crayons.