Do it Fluorescent Yellow Twisted Nylon Mason Line, 100 ft. is crafted from nylon with a twisted construction that ensures superior durability and resistance to rot. This mason line is designed to withstand exposure to oil, grease, gasoline, and mildew, making it highly reliable for various outdoor and construction tasks. It features a special coating that enhances abrasion resistance, providing long-lasting performance. With a No. 18 thread size and a breaking strength of 170 pounds, this fluorescent yellow line is both strong and visible, i for precise masonry work. The product comes in a convenient 100-foot length and is packaged in a sleeve for easy handling and storage. Model Number: 306948