Tytan Mason Line TST184W 1000 Foot Number 18 Twisted Nylon Seine Twine (160 Lbs Break Strength 0.06 Inch White Masonry Layout Chalk Cord Tool)

Tytan International TST184W #18 Twisted Nylon Seine Twine Masonry Layout Line (1,000-Foot Spool)

The Tytan International TST184W #18 Twisted Nylon Seine Twine establishes dead-level reference guides, foundation boundary grids, and straight alignment planes across bricklaying courses, concrete masonry units (CMU), landscaping grades, and framing layouts. Manufactured from 100% continuous filament high-tenacity nylon with a 3-strand twisted construction, this 0.06-inch diameter line delivers a robust 160-lb approximate breaking strength while holding maximum taut tension across 1,000-foot spans without mid-span sagging. Its bright white synthetic fibers withstand moisture, rot, oil, and intense abrasive friction against rough block corners to ensure clear visibility and accurate chalk-line snapping on active jobsites.

Best Used For:

• Masonry & Bricklaying Alignment: Pulling drum-tight level lines across corner line blocks and trig pins to keep brick courses and concrete blocks aligned horizontally and vertically.
• Excavation & Landscape Grade Staking: Setting foundation perimeter batter boards, trench elevation heights, and paver patio guide lines across rough dirt terrain.
• Chalk Line Snapping & Framing: Holding fine powdered layout chalk and snapping high-contrast, crisp reference lines onto dark concrete slabs and subfloor decks.

Key Performance & Safety Features

• High-Tenacity 3-Strand Twisted Core: Delivers 160 lbs of tensile breaking strength to resist snapping under severe manual stretching between line stretchers.
• Dynamic Snap Elasticity: Engineered elongation profile allows the cord to stretch taut and snap crisp, straight chalk marks without fraying over coarse aggregate.
• 100% Rot & Mildew Proof: Synthetic polymer construction will not degrade, mold, or lose tensile holding capacity when exposed to mud, rain, or mortar lime.
• Brilliant High-Contrast White: Provides sharp optical clarity against dark cured asphalt, grey poured concrete, brown soil, and red brickwork.
• Heavy-Duty 1,000-Foot Bulk Tube: Smooth-dispensing compact 1-lb spool prevents tangling and allows continuous line payouts for large commercial site layouts.

What's Included

• (1) 1,000-Foot Spool of Tytan International #18 Twisted Nylon Seine Twine in Brilliant White (TST184W)

Technical Specifications

Pro-Tip: Tie your knots using a taut-line hitch or wrap the twine multiple times around aluminum line corner blocks; the 3-strand twisted nylon construction grips firmly against itself under tension to eliminate line slip across long foundation spans.