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Your cart is empty.Great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear. Flip-cap keeps the chalk in the bottle where you want it and stops it from spilling out in areas that you don't. Flip-top cap also seals the chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping. IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4pound (4935524)
Inacio
2025-08-30 19:33:57
Really love to use the strait red color. For concrete slabs and walls tends to last through the poor vs the blue can be hard to see as you pour. Good price on amazon as well.
Andrew Syring
2025-08-08 19:50:45
It’s perfect. It’s the best balance of permanence on the substrate and the least amount of coloring yourself throughout the day. Black shows up so well, but you look like you came out of a coal mine by lunch. This is the solution. Very permanent, but not on you!
Michael J Egan
2025-07-07 15:28:43
I wanted a chalk that stayed longer when laying out floors and it was perfect
kopuga
2025-05-24 13:42:53
My main complaint was difficulty finding the line while wet (wet as in a rainy day). The line stayed well enough after but especially the black was difficult to reference while wet. The cost made it hard to refuse but it’s my guess that I will loose this container before I utilize all the chalk.
joan224
2025-05-22 18:25:06
As described
Aron merida
2025-05-13 16:35:50
Me gusta más el polvo negro que el azul la marca queda más limpia buen compra
ERIC SUITER
2025-04-14 10:19:16
We mark concrete slabs for large wet sawing machines. These chalk lines are very bold against the cured concrete, and are fairly durable as-is. Once sealed with a misting of clear spray paint, these cut lines hold up very well to brooming, foot traffic, vehicle traffic and slurry removal. The best chalk for this purpose.
Brittney
2025-04-13 18:56:35
Does the job
nigel
2025-04-09 11:51:43
$4 at the local hardware 🤔
Yashar Abbasnejad
2025-02-18 14:28:49
The most durable chalk
José Hernández
2025-02-14 18:53:41
Se ve muy bien el color pero el detalle k no es duradero en el sentido de que solo puedes marcar dos lÃneas en cada pintada
RMNB
2025-01-09 15:31:05
This level 4 permanent chalk is excellent!! Better than the Tajima ink. I do layout on a daily base, tried them all. This new red, blue and black level 4 permanent are the best on the market
DANIEL PINALES BRAVO
2025-01-06 11:12:11
Tiza durable y visible. Cumple su objetivo
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