Numbering Design: the fire extinguisher seal is laser printed, and the default serial number is displayed in black letters which is convenient for recording information during use; The total length of stamp seals is 9.8 inch/ 250 mm Easy to Use: pull up ties are easily tear off by hand when emergencies come up; Self locking and hand breaking up, easy to use and length is adjustable; Plastic security tamper tags meet your needs and save your time Tamper Proof: numbered zip tamper seals are one time using and each has series identification numbers; Pull tight plastic tags can't be opened once locked; 1000 pieces of self locking stamp seals are sufficient to meet your needs Quality Materials: plastic security tamper seals are made of plastic, which is to aging, and good resilience; Number zip seals are perfect for tool kits, secure enough but not too difficult to break Widely Application: numbered disposable tamper seals are suitable for fire extinguisher, kit, zippered bags, cables, cloth, bags, hospital, bank, duty free shop, supermarkets, ID tags, sprinkler systems, tractors and trailers, Weight: 3.66077586051 pounds, Manufacturer: Prterver