IRWIN
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IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)
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IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)
Great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear.
IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)
Item #: 76498795

IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)

85% of respondents would recommend this to a friend

Item #: 76498795

MWK 126316

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Wednesday, September 23
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Great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear.
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What Stands Out

Vivid Color
The indigo blue chalk offers high visibility, ensuring your markings stand out on various surfaces, making it easier to see your lines clearly during construction or DIY projects.
Durable Quality
With a weight of 4 lbs, this chalk is designed to withstand tough working conditions, providing reliable performance and reducing the need for frequent replacements.
Easy Application
This permanent staining chalk easily adheres to surfaces for long-lasting marks. Ideal for professionals and DIY enthusiasts alike, it simplifies layout and marking tasks efficiently.

Product Details

Shop IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524) online at a best price in Malawi. B018BC0PLM
Brand NameIRWIN
Model Number4935524
Model Name4935524
Number of Items1
ManufacturerIRWIN
Unit Count6 Ounce
Global Trade Identification Number00024721999320
UPC024721999320
Included ComponentsCHALK 4 LB INDIGO BLUE PERMANENT
Item Type NameCHALK 4 LB INDIGO BLUE PERMANENT
Manufacturer Part Number4935524
Size64 oz (Pack of 1)
Item Dimensions6.76 x 4.3 x 9.97 inches (17.2 x 10.9 x 25.3 cm)
Item Weight16 ounces (453.6 grams)
Liquid Volume64 fluid ounces
ColorIndigo Blue
Finish TypesBrushed
Style NameContemporary
Recommended Uses For ProductCarpentry, Marking Out
Additional FeaturesDust Free, Quick Drying, Refillable
Material TypeBlend
BrandIRWIN
MaterialBlend

Who Should Buy?

Suitable For
  • Contractors

    Ideal for contractors requiring long-lasting markings on various surfaces during construction or renovation projects.

  • DIY Enthusiasts

    Perfect for DIY projects needing durable, visible chalk lines for accuracy in layout and measurements.

  • Landscapers

    Beneficial for landscapers marking out garden beds or lawn designs with easily visible and permanent lines.

Not Suitable For
  • Temporary Markings

    Unsuitable for users needing temporary markings, as this chalk is designed for more permanent applications.

Product Description

IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk?

    Answer: The IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk is designed for marking surfaces with long-lasting, indelible lines. It is ideal for construction, landscaping, and other outdoor applications where clear, persistent markings are essential. This chalk provides bright, visible lines that resist fading, allowing professionals and DIY enthusiasts to achieve precision in their work. For example, it's perfect for marking boundaries in landscaping projects or creating guidelines during a construction job.
  • Question: Is the Indigo Blue chalk suitable for indoor use?

    Answer: Yes, the Indigo Blue chalk is suitable for both indoor and outdoor use. While it is commonly used in outdoor settings due to its permanent nature, it can also be utilized inside for tasks like marking floors or walls during renovations. The chalk's bold color ensures that lines are easily visible on various surfaces, making it a versatile tool in both residential and commercial projects. For instance, you can use it to define areas during an interior painting project.
  • Question: How to properly use the IRWIN Tools STRAIT-LINE chalk?

    Answer: To use the IRWIN Tools STRAIT-LINE chalk, first ensure the surface you are marking is clean and dry. Shake the container well and then use a chalk line or applicator to lay down your line. Apply consistent pressure for an even mark. The chalk is designed to stain and remain permanent on most surfaces, so plan accordingly before marking. This makes it particularly useful for marking straight lines in construction or layout work, providing accuracy for cutting or measuring.
  • Question: Can I use this chalk on wet surfaces?

    Answer: Using the IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk on wet surfaces is not recommended, as moisture can affect the adhesion and permanence of the mark. For best results, the chalk should be applied on dry, clean surfaces to ensure its long-lasting properties. For example, if you're marking lines for an outdoor project, it’s best to choose a dry day, ensuring that your markings adhere properly and remain visible throughout the work.
  • Question: How does this chalk compare to traditional chalk?

    Answer: The IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk is specifically designed for durability and visibility, outperforming traditional chalk. While regular chalk can easily be wiped away or washed off, this marking chalk offers a permanent solution, ideal for outdoor and high-visibility applications. Users will appreciate that it doesn’t dust or powder off in windy conditions, making it more reliable for consistent, clear markings during projects like landscaping or construction.
  • Question: What surfaces are compatible with the marking chalk?

    Answer: This permanent staining marking chalk is compatible with a variety of surfaces, including concrete, asphalt, wood, and dirt. Its versatile formula allows it to be used effectively in different environments, whether you’re working on a construction site or marking out landscaping areas. For instance, you could use it to clearly outline areas for digging in gardening or to establish precise lines for concrete pouring, ensuring your projects stay on track.
  • Question: How do I store the chalk for optimal performance?

    Answer: To ensure optimal performance of the IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, store it in a cool, dry place away from direct sunlight. Keeping the lid tightly closed will prevent moisture from affecting the chalk's properties. When stored properly, the chalk will maintain its consistency and effectiveness, ready for use whenever you have your next marking project, whether indoors or outdoors.
  • Question: What other colors are available for this product?

    Answer: The IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk is available in several colors, including standard options like white and neon pink, alongside the Indigo Blue. Different colors can be utilized for specific projects, helping to distinguish between different tasks or areas, enhancing visibility and organization during work. For example, using different colors can help in identifying boundaries for various landscaping sections, improving clarity on a job site.
  • Question: Is the chalk dust-free?

    Answer: Yes, the IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk is formulated to be dust-free, minimizing cleanup and ensuring that your workspace remains tidy. This feature is particularly beneficial for indoor projects or sensitive environments, where traditional chalk might leave behind residue. By choosing dust-free chalk, you can focus more on your work without worrying about excessive cleanup afterward, making it ideal for professional and DIY applications alike.
  • Question: Where can I buy IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb 4935524?

    Answer: You can buy the IRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb 4935524 from Ubuy in Malawi. Ubuy offers a wide selection of tools and supplies, making it a reliable place to find this chalk for your marking needs.

IRWIN Chalk Lines 4935524 Editorial Review

The IRWIN Crimson Red Chalk is a highly regarded product that offers a great balance of permanence and minimal coloring transfer throughout the day. Users have found it to be very permanent on substrates like asphalt, with lines that stick even during wet sawing. However, some customers have experienced issues with packaging, with items being opened and spilled in transit. This has led to dissatisfaction among some users who feel that they did not receive the full amount of product they expected. Despite this, the chalk itself is praised for its performance. **

Customer Reviews & Ratings

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Pros

  • Provides a good balance of permanence and minimal transfer of color
  • Shows up well on substrates like asphalt
  • Lines stay despite wet conditions

Cons

  • Some customers feel they did not receive the full amount of product

Platform Trust & Buyer Confidence

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

MWK 126316

Order now and get it around Wednesday, September 23

QTY:

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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

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Fastest cross-border delivery

Features & Benefits

  • Ideal for extreme outdoor conditions.
  • Withstands harsh weather and jobsite wear.
  • Flip-cap design prevents spills.
  • Airtight chamber reduces moisture exposure.
  • Minimizes risk of chalk clumping.
  • Lightweight packaging of 1.95 kilograms.

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