Keson PM103BLUE ProChalk Permanent Chalk, Blue, 3-Pounds

. Product Description

Exterior applications include exterior layout, extreme conditions, concrete layout, long-term applications. This is a concentrated marking product. Lines snapped with ProChalk Semi-Permanent, Permanent, and Ultimate Dye grades may be visible as long as one year after striking. The colors also may bleed through light-colored paint.

From the Manufacturer

There is a delicate balance that needs to be maintained with permanent chalk: enough pigment to slap down a line that's not going anywhere and enough carrier to keep the chalk flowing. Our PermaMark chalk is formulated to achieve a permanent line every time.
. Professional grade permanent weatherproof marking chalk
. Applications include exterior layout, concrete layout, roofing, metal fabrication
. For weatherproof and waterproof lines that Aren't going to go away any time soon used for more extreme conditions
. Made in the USA