Irwin Strait-Line 4 lb Permanent Marking Chalk Crimson Red 1 pk

Irwin Strait-Line Permanent Marking Chalk in Crimson Red is built for tough outdoor conditions. This 4 lb container delivers long-lasting, high-visibility lines that resist fading from weather and heavy jobsite traffic. Designed to stain surfaces, this chalk eliminates the need for spray sealant and remains visible for weeks—making it ideal for concrete, roofing, and framing work. Perfect for professionals who need reliable, bold marks that last through the elements. Durable, bold, and permanent—this is the go-to chalk for demanding outdoor marking tasks.

• Brand Name: Irwin
• Sub Brand: Strait-Line
• Chalk Type: Permanent
• Color: Crimson Red
• Product Type: Marking Chalk
• Number in Package: 1 pk
• Size: 4 lb
• Vendor Internet Sales Policy: Sale of this product on third-party online marketplaces (eg. Amazon, eBay, Walmart) or member-owned websites is prohibited without direct written authorization from Stanley Black & Decker.

• UPC: 024721999337
• Manufacturer Part No: 4935525

• Brand Name: Irwin
• Sub Brand: Strait-Line
• Chalk Type: Permanent
• Color: Crimson Red
• Product Type: Marking Chalk
• Number in Package: 1 pk
• Size: 4 lb
• Vendor Internet Sales Policy: Sale of this product on third-party online marketplaces (eg. Amazon, eBay, Walmart) or member-owned websites is prohibited without direct written authorization from Stanley Black & Decker.