Crayons Lumber Hard in blue are professional-grade marking crayons designed for marking wood, metal, concrete, and other trade surfaces. Each crayon features a hard wax formulation that resists smudging and weathering, making them ideal for construction sites, carpentry, electrical installation work, and general trade marking. This box contains 10 crayons, providing excellent value for contractors, builders, and facilities managers who need reliable marking tools on site.
