This IRWIN STRAIT-LINE Standard Marking Chalk creates temporary marks that provide great visibility. The versatile formula is designed for both interior and exterior applications. Each bottle of IRWIN STRAIT-LINE marking chalk features a flip-top cap that is specially engineered for an airtight seal that keeps moisture out and minimizes clumping.
Interior or exterior use
Provides great visibility
High visibility chalk for self chalking line reels
Comes in the color blue
Comes in a plastic container
Proprietary formulations for dark, sharp lines and reliable performance