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Your cart is empty.ProChalk Permanent for weatherproof and waterproof lines that aren’t going to go away any time soon. Most users are choosing this level of intensity for applications that are going to be covered. This level is engineered for more extreme conditions. Exterior applications include exterior layout, extreme conditions, concrete layout, long-term applications.
Maria
2025-09-03 15:06:57
Muy barato, buena calidad.
Manuel
2025-09-01 12:47:38
Great chalk. Long lasting
Juan Melgar
2025-08-26 14:09:54
Es muy bueno lo recomiendo ðŸ‘
Reed Scruggs
2025-08-10 12:47:26
I use black to build to, red for corrections, blue for special. Holds up well to the job site and rain.
khopper540
2025-07-15 19:48:39
It is not really permanent on concrete like they lead you to believe, but it is very dark and if you touch it up every now and then it is very good for blue chalk
sarah j
2025-06-05 11:31:07
This is my husband’s favorite chalk. He uses it for work and finds it helpful to get the large quantity here so he doesn’t have to run to the store as often.
The Framer
2025-05-24 11:10:49
Never really been a fan of blue, but this is bright, bright blue. Paired with a braided line it's very crisp. Currently pouching a Lufkin 50' which I liked so much it sent the tajima's to the backup box. Number 4 permanence....not really so much on cdx in the wet. Perhaps it's different on OSB, but I'll never know because we don't use it. I'll get around to loading the Lufkin mini with some tajima line and see how that rolls, but so far I like it quite a bit
Justin Greenwell
2025-03-24 10:43:43
Works
Helder
2025-01-14 09:09:28
Very good product, right up there with the Irwin brand, used it to chalk concrete floors for layout and it rained and still visible
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