IRWIN 66404 Permanent Lumber Crayon, Black, 1/2 in Dia, 4-1/2 in L [SKU: ORG5576111]

For use on oily, slick, wet, cold or dry surfaces, Non-toxic, waterproof, Weather-resistant lines remain visible after weeks of weather, sun and jobsite wear and tear, For concrete layout, exterior layout, roofing, steel and metal fabrication. [QTY/UOM: 1EA / 1EA]