IRWIN 4935520 Marking Chalk Refill, Midnight Black, Permanent

IRWIN STRAIT-LINE® 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® chalk bottles, seals the chalk in an air-tight chamber, keeping out moisture and reducing the risk of clumping.

Details

• Visible after weeks of weather exposure and jobsite wear
• Reduces need for spray sealant
• Stains surfaces

Width: 3.250 in

Length: 7.250 in

Height: 6.500 in

Weight: 0.817 lbs