Marshalltown M620 White Mason's Line 76.2m (250ft) Twisted Nylon Bricklayers Line

Buy the Marshalltown M620 76.2m (250ft) White Mason's Line at Ace Line Plant Ltd. Professional-grade No. 18 twisted nylon line heat-set for stability. Waterproof and highly resistant to mortar, oil, and mildew. Perfect for precision bricklaying, concrete staking, and landscaping layouts. Fast delivery available.

Overview

Achieve absolute precision on your job site with the reliable Marshalltown M620 White Mason's Line. Spanning 76.2 metres (250 feet), this professional-grade No. 18 string line is an essential tool for commercial bricklayers, contractors, and hardscapers alike.

Constructed from 100% pure twisted nylon yarn, the M620 is expertly heat-set after winding to maximize structural stability and eliminate unwanted elasticity or sagging. Its ultra-bright white finish delivers excellent, clean visibility against soil, mortar, and blocks. Engineered to thrive in brutal construction environments, this line is completely waterproof and unaffected by constant exposure to harsh masonry mortar, oils, mildew, or sudden changes in weather.

Key Features & Benefits

Premium Heat-Set Nylon: Specially heat-stabilized during production to retain its shape and tension without stretching out over long runs.
Ultra-Bright White Visibility: Sharp, high-contrast white profile provides effortless tracking for clean alignments in dull light conditions.
No. 18 Heavy-Duty Gauge: Robust construction offers structural resilience against trowel clipping and high-tension pulls.
100% Weatherproof Material: Will not absorb water or slacken when exposed to sudden rain, intense dry heat, or humidity.
Chemical & Rot Resistance: Immune to degradation from prolonged exposure to wet cement mixes, mortar chemicals, oil, and ground mildew.
Versatile Layout Application: The ideal professional tool for masonry bricklaying, block installation, concrete path staking, and landscaping boundaries.

Specifications