Pull Tight Cable Seal for Cargo Security Lock 1.self-locking 2.zinc alloy & steel 3. ... dia:2.5mm 4.disposable Pull Tight Cable Seal for Cargo Security Lock Description:1, Material: zinc alloy and steel wire ... department and the confidentiality purposes in finance, store, electrical, petroleum, air transportation etc.5, Colors: white, red, blue, yellow, green, black ...