Chalk line

Designed for exterior applications including corrections, plumbing, electrical, roofing, and masonry, the Keson ProChalk High Visibility Chalk boasts one bold strike marking. It is easy to apply and will naturally wear or wash away in a few days. This high-quality chalk is perfect for all general construction applications and comes in one, four, six or 12 pieces.

ProChalk Semi-Permanent for weather- and water-resistant lines that hit and stick for a long time but will eventually wear away naturally. Exterior applications include concrete layout, roofing, metal fabrication.

ProChalk is formulated to achieve a perfect line every time. Brilliant color tones provide strong, sharp lines. From the brightest pigments in the industry, we produce standard colors plus our unique, fluorescent Glo-Orange and Glo-Lime for improved visibility.