Size:275 feet | Color:Florescent Yellow Whether you're a professional bricklayer, a homeowner with a DIY project, or just need a handy all-purpose heavy-duty string to keep around, SGT KNOTS Twisted Nylon Mason Line #18 is here to do the job. With a test strength of approximately 160 lbs., this line is more than up to the job of holding a straight, sag-free line to keep your masonry straight and level, but that's just the beginning. Need an impromptu fishing line? A sturdy crafting twine? Give this twisted mason line a whirl, and it won't disappoint. Made from 100% nylon, SGT KNOTS Twisted Mason Line #18 is resistant to wear and abrasion—you can trowel away without fear, and use it it many other high-stress applications without a loss of performance. Also resistant to moisture, sunlight, acid, oils, and most other chemical wear, this line's versatility and durability in the face of a diverse array of circumstances is second to none. Currently available in white, flourescent orange, flourescent pink, and fluorescent yellow, this #18 twisted mason line comes on convenient spools of 275, 550, and 1,100 feet. You'll always have plenty on hand, and it stores away just as easily as it deploys. And, as with all products made and sold by SGT KNOTS—proud to be a veteran-owned company—this #18 mason line is made right here in the USA and backed by the SGT KNOTS Guarantee.