Irwin 65104 5 lb White Standard Marking Chalk:

The Irwin Strait-Line 65104 White Standard Marking Chalk is a reliable choice for professionals and DIY users who need temporary, high-visibility lines for layout and construction tasks. Designed for both interior and exterior use, this chalk delivers consistent performance and easy cleanup. This standard-grade chalk is formulated for temporary markings that provide excellent visibility under normal lighting conditions. Its bright white color is ideal for layout changes, corrections, and short-term marking needs on a variety of surfaces.

Key Features

• Temporary Formula: Marks are easy to remove or will naturally fade over time.
• High Visibility White Color: Perfect for layout corrections and temporary lines.
• Weather-Resistant: Suitable for interior and exterior applications.
• Flip-Top Cap Design: Airtight seal prevents moisture and clumping; easy-pour for quick refills.
• Durable Construction: Proprietary blend for sharp, consistent lines.

Specifications

• Brand: Irwin Strait-Line
• Model: 65104
• Color: White
• Weight: 5 lb
• Type: Standard Marking Chalk
• Form: Powder
• Container: Jug with flip-top cap
• Composition: Calcium Carbonate, Silica (Crystalline Quartz)
• pH: 8.5–9.5
• Relative Density: 2.7

Applications

• Construction Layouts: Ideal for marking temporary lines for framing and foundations.
• Carpentry & Woodworking: Great for layout corrections and short-term markings.
• Roofing & Masonry: Perfect for marking shingles, tiles, and concrete surfaces.
• General Use: Suitable for metal, wood, drywall, concrete, stone, and plastic.

The Irwin 65104 White Standard Marking Chalk combines visibility, reliability, and ease of use, making it a go-to choice for temporary marking needs on any job site.