IRWIN® STRAIT-LINE® marking chalks have an innovative flip-top cap that keeps the chalk in the bottle where you want it. The flip-top cap seals the chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping.

The IRWIN® STRAIT-LINE® chalk range has a wide range of permanencies and colors so whether working indoors or out, on finished surfaces or in extreme conditions, IRWIN STRAIT-LINE has the ideal chalk for every job.

Dust-off chalk is temporary chalk that can be used to mark interior walls and trim and then be wiped away cleanly. Permanent staining chalk is great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear.

5 lb bottle