High Quality: The mason line string is made of strong nylon yarn, which is stronger than polypropylene twine, resistant to moisture, oil, corrosion, and weather conditions, providing you long lasting serving time, will not tangle and kink stretch. Long Lasting: This is braided not twisted. Braided nylon mason line is superior to nylon twisted cord. The braided design allows this marking rope to hold up through the harshest conditions. Braided mason line won't fray or unravel when tying knots. Easy to use - Ideal for use with string line level or for any commercial twine heavy duty outdoor projects. Use as plumb line, or with surveyors plumb bob with string, or with a masonry line holder. Nice Visibility: The fluorescent dyes applied in this twine string has excellent visibility and is ideal in any application where high visibility is desirable, Won't be faded. The bright orange mason line is ideal for outdoor use. Multiple applications:the braided nylon twine can be applied to most indoor and outdoor activities such as fishing, boating, masonry, crafting, gardening, but also for marking, DIY projects. Also can use it as tomato twine string to tie up tomato plants or general landscaping twine.