High-visibility green marking chalk for self-chalking chalk line reels. IRWIN rates the Hi-Visibility line for exterior use, where the bright color reads clearly in low light and on dark surfaces, and its lines stay readable for roughly two to three weeks of weather exposure.

• Ideal for low light conditions and use on dark surfaces
• Exterior use
• Use to show layout changes and corrections
• Flip-top cap seals the chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping
• IRWIN application list: corrections, plumbing and electrical, roofing and masonry
• Weatherability: about 2 to 3 weeks (IRWIN rating, based on average rainfall of 4 in. per month)
• For self-chalking chalk line reels
• Color: Green
• Container size: 5 Lb
• Manufacturer part: 65106

Note: Hi-Visibility chalk is not a permanent chalk. If the line has to survive months outdoors, IRWIN's Permanent (about 2 months) or Permanent Staining (4+ months) chalk is the correct choice.

FOR CALIFORNIA SHOPPERS

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• ⚠  WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov