Wellington Puritan 46301 Neon Twisted Nylon Twine The product is ORG Nyl Twine Easy and simple use kit. The product is manufactured in China. This twine is easily seen in bright sunlight or dim areas where standard mason line can be hard to see. Orange is an optimum color to use with block as well as light brick construction #18 Tensile strength: 170 lbs. 6" tube 260'. This twine is easily seen in bright sunlight or dim areas where standard mason line can be hard to see Orange is an optimum color to use with block as well as light brick construction #18 Tensile strength: 170 lbs. 6" tube 260'