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    IRWIN 4935520 Marking Chalk Refill, Midnight Black, Permanent


    SKU: 024721999283

    IRWIN STRAIT-LINEĀ® Marking chalks have a newly engineered flip-top cap that keeps the chalk in the bottle where you want it and stops it from spilling out in areas that you don't. The flip-top cap, available on all IRWIN STRAIT-LINEĀ® chalk bottles, seals the chalk in an air-tight chamber, keeping out moisture and reducing the risk of clumping.


    • Visible after weeks of weather exposure and jobsite wear
    • Reduces need for spray sealant
    • Stains surfaces
    • Reduces need for spray sealant