5 lb. Blue Strait-Line® Permanent Marking Chalk | IRW-65101ZR

Irwin Standard Line Blue Chalk is ideal for jobs big or small. With highly visible Blue Strait-Line chalk, the temporary marking lines gives confidence to any contractor. Loaded with 5 lbs. of chalk in each container and the engineered flip-top cap that keeps the chalk from spilling during refills, staying productive has never been easier. This chalk is made from a proprietary formulation for the highest performance results.

• Interior or exterior use
• Visible after weeks of weather exposure and jobsite wear
• Durable formula is weather-resistant and suitable for interior or exterior use
• Use to show layout changes and corrections on metal, concrete, lumber, plastic, cardboard and other surfaces
• Visible after weeks of weather exposure and wear