Irwin Strait-Line Black Marking Crayons, 2-Pack Your pencil quits on wet lumber, frosts off cold steel, and skates across slick plastic - exactly when you need a clear cut line. Lost marks mean wasted material, miscuts, and an extra trip to the saw to redo work. Irwin Strait-Line black marking crayons mark cleanly where pencils and pens fail. This 2-pack of professional-grade lumber crayons puts down bold black lines on oily, slick, wet, cold, or dry surfaces. The non-toxic, lead-free wax formula is waterproof, smudge-resistant, and visible on concrete, ceramics, rubber, metal, paper, cardboard, plywood, and rough lumber. Carpenters, framers, welders, and warehouse workers keep these in their pouch for one reason: they always work, even when the day or the worksite does not cooperate. Key Features 2-pack of Irwin Strait-Line professional black marking crayons Marks on oily, wet, cold, slick, and dry surfaces Non-toxic, lead-free, and waterproof wax formula Works on lumber, concrete, metal, plastic, ceramics, and cardboard Model 666042 from Irwin's pro-grade Strait-Line lineup Why Brantford Surplus? At Brantford Surplus we stock affordable, quality jobsite consumables from brands like Irwin, Stanley, and Dewalt. Right here in Brantford Ontario, our discount-retailer model means tradesfolk and DIYers get name-brand marking tools at surplus prices. Pick up a few packs to keep stashed in the truck, the kit, and the workshop drawer. 👉 Browse more in our TOOLS - GENERAL collection. Order today and save.