zip tie plastic tags cannot be opened once locked. suitable for fire extinguishers, kits, zipper bags, cables, cloth, bags, hospitals, , supermarkets, sprinkler systems, tractors, trailers, etc. Numbered zip tie tags are disposable, each tag has a series of identification numbers. Numbered disposable safety tags. quantity is sufficient for your use., Weight: 3.85147571714 Pounds, Manufacturer: Hipzeepo