[Total Length]: The total length of the disposable numbered security seal is 246mm. One piece structure, tamper seal pull-tite design and the locking length can be adjusted. [Premium Material]: Premium PP plastic, UL approved material, eco-friendly, durable and not easy to break off, cold and heat resistant, insulation, not easy to ageing and corrosion, never fade. Break off strength is 30 lb and can withstand temperature from -40C to 130, 94V-2 flame retardant grade. [Safe & Convenient]: One-time use & tamper seal design, pull tight suitable for immediately safe. Easy to use, can be automatically locked and split manually, no tools are required to lock and unlock. [Laser Printed Number]: 100pc tamper proof tags with laser printed consecutively numbers will non-repeating, not blurry& never fade. [Application]: Fire extinguisher, truck, cables, storage-controlling, postal parcels, meters.