Irwin 4935518 Marking Chalk, Blue ~ 6oz.
PERMANENT STAINING MARKING CHALK - SPECIAL BLEND
- Make weatherproof lines w/permanent stain chalk
- Withstands months of weather-sun & jobsite abuse
- Reduces need of spraying sealant-
- over snapped lines
- Special blend of pigment and flow-agents
- Allows for staining of surfaces while minimizing
- chalk clumping
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