Irwin® Strait-Line® 2032160

Irwin® Strait-Line® Marking Chalk, Permanent, Black, 5 lb, Container, Odorless

• Type Permanent
• Color Black
• Capacity 5 lb
• Package Type Container
• Odor/Scent Odorless

• 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
• Exterior use
• Visible after weeks of weather exposure and jobsite wear
• 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, black iron oxide, silica-crystalline quartz compositions
• 8.5 - 9.5 pH
• Powder form
• 3.3 - 3.35 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