623 Mason Line, 500 Ft., White Braided Nylon

The Marshalltown 623 Mason Line is a 500-foot braided nylon string designed for masonry layout, bricklaying, concrete pouring, and other construction tasks that require precise alignment. Professional contractors and DIY enthusiasts alike rely on this durable line to mark straight reference points and maintain accuracy across both small and large-scale projects.

Built from high-strength 150 lb test nylon in size #18, this mason line solves the common problem of flimsy or unreliable layout guides that stretch, sag, or deteriorate on the job. Its braided construction and durable materials make it resistant to the harsh conditions found at construction sites, ensuring consistent performance whether conditions are wet or dry.

Features and Benefits

• 150 lb Test Nylon Construction: Provides superior strength and durability to withstand the demands of masonry work and frequent handling on site.
• Will Not Unravel if Struck by Trowel: The line will not unravel when struck by a trowel, maintaining usability during active work.
• Moisture and Mildew Resistant: Resists extreme moisture and dryness without deteriorating, mildewing, or becoming compromised by weather exposure.
• Stays Taut: Maintains consistent tension to provide accurate, reliable alignment for layout work and reference lines.
• Highly Visible White Color: Easy to spot during layout and marking work, improving visibility and reducing measurement errors.
• 500-Foot Length: Sufficient supply for both small repairs and large-scale masonry projects without requiring multiple reels.

Specifications

• Brand: Marshalltown
• Model: 623
• Length: 500 ft.
• Material: Braided nylon
• Color: White
• Test Strength: 150 lb
• Size: #18

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.