Irwin Strait Line 4 oz. Blue Powder Chalk is a high-quality chalk that is perfect for marking lines on a variety of surfaces. It is easy to use and can be applied with a chalk line or a brush. The chalk is also water-resistant and will not smudge or fade. The newly engineered flip-top cap 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.

• 4 oz.
• Blue Powder Chalk
• High-quality chalk that is perfect for marking lines on a variety of surfaces.
• Easy to use and can be applied with a chalk line or a brush.
• Water-resistant and will not smudge or fade.