100% nylon in rough braided chalkline construction. Resistant to rot, abrasion, and is not damaged by cement or alkalines. Grass Valley labeled and shrink film wrapped. Tubes are 1/16 In. in diameter and have an approximate 70 Lb. breaking strength.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.