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IRWIN Tools STRAIT-LINE 65201 Standard Marking Chalk, 2.5-pound, Blue (65201)

TLDR Review: IRWIN Strait-Line Marking Chalk

Item: IRWIN Strait-Line Marking Chalk
Author: ShopSavvy

By ShopSavvy Team

Published: January 14th, 2026

Pros

•Provides clean, precise, and consistent blue chalk lines, trusted by professionals for detailed marking tasks.
•Has a lonasting supply with reliable performance throughout use, making it a practical choice for frequent users.
•Does not stain surfaces like lawns or driveways and washes away easily, even after outdoor use on snow.
•Offers good visibility against white backgrounds, such as snow, making it versatile beyond traditional construction uses.
•Serves well as a reliable chalkline refill and a perfect replacement for original chalkline tubes.
•Creates visually striking color effects for creative uses, such as gender reveal events.
•Difficult to find comparable quality or color options easily in local stores, making this a go product for many.

Cons

•The blue color might be lighter than some users prefer; a darker shade would improve satisfaction.
•Brand familiarity exists, but some users remain unsure if there are objectively better options available elsewhere.

Bottom Line

The IRWIN Tools STRAIT-LINE 65201 Blue Marking Chalk is a durable, reliable choice for professionals and DIYers who need clean, visible, and easily removable blue chalk lines. Its versatility extends beyond typical construction uses, and its long-lasting supply means fewer refills needed. If you want more intense color saturation or are exploring alternatives, keep an eye out for other premium chalk options, but this product remains a trusted staple for precise marking needs.

Lowest at any Popular Retailer

$5.76 at zorotools.com