• 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
• Exterior use
• For use on a variety of surfaces including wood, drywall, concrete, stone and metal
• Permanent colors, especially black and red, produce long lasting lines that won't fade
• Proprietary formulations for dark, sharp lines and reliable performance
• Micro-fine for more marking power
• Calcium carbonate, red iron oxide, silica-crystalline quartz compositions
• 8.5 - 9.5 pH
• Powder form
• 3.4 - 3.45 Relative density
• Produces color line that remains visible for weeks
• Up to 2 months permanence
• Weather resistant lines remain visible after weeks of weather, sun and jobsite wear and tear

Catalog

• Catalog

SDS

• SDS