8 oz. Fluorescent Orange Hi-Visibility Strait-Line Marking Chalk | IRW-64905ZR

This chalk is made from a proprietary formulation for the highest performance results. Together with the IRWIN chalk reels they leave darker, sharper lines.

• For use on a variety of surfaces including: wood and drywall
• Chalk containers are filled by weight, not volume
• Proprietary formulations for dark, sharp line
• Reliable performance
• Built-in scribe notches