IRWIN 66402 Standard Lumber Crayon, Blue, 1/2 in Dia, 4-1/2 in L [SKU: ORG6891709]

For use on oily, slick, wet, cold or dry surfaces, Non-toxic, waterproof, Temporary marking chalk, Provides great visibility, For interior layout, paneling, roofing and siding. [QTY/UOM: 1EA / 1EA]