Irwin Strait-Line White Lumber Marking Crayon Dark surfaces eat black pencil marks like they were never there. Try cutting dark plywood, painted steel, or rough-sawn cedar with no visible reference line and the result is a guaranteed mistake. Pencils skate, pens dry up, and chalk wipes off the moment you reach for the saw. The Irwin Strait-Line white marking crayon shows up bold and clean where dark markers fail. This professional lumber crayon lays down a high-visibility white line on oily, slick, wet, cold, or dry surfaces. The wax-based formula is non-toxic, lead-free, and fully waterproof - your marks survive humidity, rain, and rough handling. Use it on dark lumber, painted concrete, steel, rubber, ceramics, cardboard, plastic, and packaging. Carpenters, framers, welders, and warehouse staff keep a white crayon in the pouch alongside the black one because some jobs need both. Key Features Single Irwin Strait-Line professional white lumber crayon Marks on oily, wet, cold, slick, and dry surfaces Non-toxic, lead-free, waterproof wax formula High-visibility white shows up on dark and painted materials Model 66405 - 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 tradespeople and homeowners can grab quality crayons at surplus prices. Stash one in every pouch and toolbox. π Browse more in our TOOLS - GENERAL collection. Order today and save.