- Exterior use
- Visible after weeks of weather exposure and jobsite wear
Marking chalk micro-fine refills color=red 5 pounds Micro-fine for more marking power; interior or exterior use. Marks are temporary and provides great visibility.
IRWIN STRAIT-LINE? (r) Marking chalks have a newly engineered flip-top cap that keeps the chalk in the bottle where you want it and stops it from spilling out in areas that you don't. The flip-top cap, available on all IRWIN STRAIT-LINE? (r) chalk bottles, seals the chalk in an air-tight chamber, keeping out moisture and reducing the risk of clumping. Micro-fine for more marking power; interior or exterior use. Marks are temporary and provides great visibility.