The Stringliner Pro mason line reel is the construction line that lives in your nail bag or pocket. Carpenters, masons, brick layers, and steel workers use it to snap straight reference lines for layout, course alignment, fence runs, and rough construction.

• Color: Fluorescent Pink - high-visibility fluorescent shade reads clearly against gray block, brick, dark soil, and freshly cut lumber
• Line: 125 feet of #18 braided nylon twine, approximately 165 lb tensile strength
• Reel: durable polyethylene body with a patented handle that swaps spools quickly when the line wears out or you change color
• Rewind: hand crank for quick takeup, or auto-rewind by inserting a power screwdriver into the slot at the base of the handle
• No metal moving parts - won't rust, easy to clean when chalk or mortar dust loads up
• Reloadable - factory replacement #18 braided nylon spools are sold separately in the same color line

Length: 125 Ft (1/8 lb braided reel) - pocket-sized reel sized for short residential layouts, single-room masonry repairs, fence-post string lines, and small concrete pours. Reloads onto the same reel from a fresh spool when run out.

Braided vs Twisted: Braided #18 nylon resists fraying at the cut end and stretches less than twisted line, which gives crisper snap-line accuracy and longer service life on abrasive masonry edges. Twisted nylon packs more linear length onto the same reel weight if maximum length per reel matters more than fray resistance.

Tip: Pull the line taut between block-corner pins or stakes before snapping or stretching to a chalk-line gun. Over-snapping a slack line shortens the chalk coat and the line itself fuzzes faster - a single firm snap leaves a crisper mark and saves the line for the next course.

Tip: Singe the cut end briefly with a lighter to fuse the braided strands so the line won't unravel when wound back onto the reel.