Koch (pronounced “cook”) Industries, established in 1978, is the premier provider and merchandiser of high quality chain, rope and accessories in North America. Our twisted mason line is a durable and abrasion resistant polyester line. It knots securely and wears well on pulleys. Resistant to oils, gas and most chemicals it is also rot and mildew resistant. Preferred by mason and contractors to use for chalk and mason lines, decoy lines and architectural layouts, it is also perfect for any use that requires strong twine. Maximum load
