... .5mm 4.disposable Pull Tight Cable Seal for Cargo Security Lock Description:1, Material: zinc alloy and steel wire;2, Wire ... Dia: 2.5mm;3, Features: easy to lock, self-locking; one-time use only; 4, Application: customs, railway ... trade testing department and the confidentiality purposes in finance, store, electrical, petroleum, air transportation etc.5, Colors: white, red, blue, yellow ...