MARSHALLTOWN Size 18 Braided Nylon Masons Line is perfect for masonry jobs and for the layout of general construction. The line will not unravel if struck by a trowel and is not affected by extreme moisture or dryness. MARSHALLTOWNs braided nylon masons line will not mildew and is designed to stay taut. Brand Name: Marshalltown Style: Braided Product Type: Mason s Line Line Length: 500 ft. Line Color: Orange Line Material: #18 Nylon Usage: Staking out sites concrete and landscape layout and brick/block laying Core Diameter: 6 in. Will not mildew Will not unravel if struck by a trowel