Pull tight Galvanized Steel cable seals offer a tamper evident solution for sealing truck trailers, containers, and various other cargo holds. Made of heavy-duty Galvanized Steel these cable seals have a tension strength of up to 551 lbs and come without laser etched numbers or printed names. To use simply thread the end of the 1.8mm Galvanized Steel wire through the heavy-duty aluminum alloy lock and pull tight. These security seals can only be removed by wire cutters. Blank seals are not ISO 17712:2013 Compliant.