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Blue Powder Marking Chalk Refill — 5 lb., Interior/Exterior Use, Temporary Marks
- Mfg.#
- 65101ZR
- Sku#
- 8353716
- Interior or exterior use
- Marks are temporary
- Provides great visibility
- Micro-fine for more marking power
* Estimated stock levels as of Sat, Apr 11, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
This 5-pound Blue Powder Standard Marking Chalk refill from IRWIN is a micro-fine marking chalk designed for clear, temporary layout lines you can see on the job. Ideal for both interior and exterior use, the bright blue pigment provides great visibility on wood, drywall, concrete and other common surfaces, making it easy to snap accurate lines for framing, tile layout, landscaping or general construction. The micro-fine formula delivers more marking power and smoother, more consistent lines than coarse powders, helping reduce blowouts and improve the precision of your chalk snaps. Because the marks are temporary, cleanup is straightforward after the job is done. Made in China, this 5 lb size keeps a steady supply of refill chalk on hand for string boxes and chalk line tools on busy worksites or weekend projects.
Specifications
General
| Applicable Materials | Wood, Drywall, Concrete, Stone and Metal |
|---|---|
| Color | Blue |
| Composition | Calcium Carbonate, Ultramarine Blue, Silica |
| Form | Ppwder |
| Media | Water, Dry Chemical, Carbon Dioxide |
| Odor/Scent | Odorless |
| P H Range | 8.5 - 9.5 |
| Pack Qty | 1 |
| Specific Gravity | 2.7 - 2.71 |
| Type | Marking Chalk |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | CN |
|---|---|
| Prop 65 Warning |
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
|
Dimensions
| Size | 5 lb |
|---|
