Irwin Strait-Line Permanent Staining Chalk

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IRWIN STRAIT-LINE Permanent Staining Chalk is great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear. Chalk containers ar e filled by weight not volume. Features Great for chalk line refill Permanent staining marking chalk For exterior use Visible after weeks of weather exposure and jobsite wear Stains surface and reduces need for spray sealant Show more