IRWIN Chalk Blue 5 lb #1 Permanence

The flip-top cap seals the chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping.
Irwin Strait-Line introduces its new Hi-flow nozzle cap for improved chalk flow on permanent staining chalks.
The cap allows for quicker chalk fills and less clumping when using higher-density permanent staining chalks.
Irwin Strait-Line marking chalks have an innovative flip-top cap that keeps the chalk in the bottle where you want it.
Excellent for both interior and exterior applications.
For making temporary marks.
Great visibility.