The Irwin® standard marking chalk can be used indoor and outdoor, makes temporary marks and provides great visibility.
- Proprietary formulations for dark, sharp lines and reliable performance
- Chalk containers are filled by weight, not volume.
- Temporary marking chalk for indoor or outdoor use
- 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 want it






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