Irwin Strait-Line Red Marking Crayons, 2-Pack Trying to mark a cut line on oily steel, wet 2x4s, or slick PVC with a pencil is a quick lesson in frustration. The mark disappears, the line drifts, and the next cut is wrong. Carpenters, framers, and warehouse crews need a marker that works on whatever shows up on the truck. Irwin Strait-Line red marking crayons do exactly that. This 2-pack of high-visibility red lumber crayons marks bold lines on oily, slick, wet, cold, or dry surfaces. The wax-based formula is non-toxic, lead-free, and fully waterproof, so your reference marks survive a rain shower or a wet plywood stack. Use them on lumber, concrete, ceramics, rubber, metal, paper, cardboard, and rough castings - they are the universal jobsite marker. Key Features 2-pack of Irwin Strait-Line professional red marking crayons Marks on oily, wet, cold, slick, and dry surfaces Non-toxic, lead-free, waterproof wax formula High visibility red color stands out on lumber, metal, and concrete Model 666012 from Irwin's pro 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 DIYers get quality crayons at surplus prices. Stock the pouch, the toolbox, and the truck for less. 👉 Browse more in our TOOLS - GENERAL collection. Order today and save.