... & steel 3.steel dia:2.5mm 4.disposable Pull Tight Cable Seal for Cargo Security Lock Description:1, Material: zinc alloy and ... lock, self-locking; one-time use only; 4, Application: customs, railway, oil-transportation, foreign trade testing department and the confidentiality purposes ... , yellow, green, black and any other colors, we can customize for you.6, Usage Way: insert the tail into the hole ...