EBayBraided nylon mason line made by high strength virgin nylon yarn,  with a tensile strength of approximately 170 lbs. Excellent durability makes it withstand the hit of a trowel, braided nylon mason line is superior to nylon twisted cord, braided mason line won't fray or unravel when tying knots, which is preferred by masons and contractor. High visibility won't be fade. Can be applied to most indoor and outdoor activities,designed for masonry and archaeology projects. Also for marking, DIY projects, gift wrapping and bundling loose items for storage. Reusable Design: The matching line reel makes the use of mason string line more convenient, and the reel can be reused. The tight and consistent braiding design creates a high-quality, easy-to-use rope. Other twisted nylon line will unravel after cutting, but our braided strong mason line will not. Mason rope uses fluorescent dye for excellent visibility, so it is very conspicuous Superior material: The twine string is made of pure nylon yarn with a tensile strength of approximately 170 lbs. The excellent quality can withstand spatula blows and will not unravel when knotted or cut. The construction string line is resistant to moisture, oil, corrosion and weathering and has a longer service life Multiple Uses: #18 braided nylon string is designed for masonry and construction, and is perfect for use with a rope level. The orange mason line can also be applied to most home and outdoor activities, such as fishing, boating, gardening, supporting plants, and can also be used for marking, DIY projects, etc. Suitable size: We provide 3 different lengths, 250ft, 500ft, 1000ft, suitable for most scenes, you can cut the twine into different required lengths. With a tensile strength of approximately 170 lbs., Our mason twine is durable and wear-resistant After-sales: We are a professional rope manufacturing factory, customer satisfaction has always been our first goal. If you are not satisfied with our mason nylon line, please feel free to let us know and we will provide a solution as soon as possible