【About This Product】 Security: The stainless steel spring lock mechanism provides maximum security against tampering. Numbered: The sign tags are printed with serial numbers, and the numbers are random and do not repeat. Laser printed, clear and does not fade. Material: The security seals are made of high-density polypropylene, which is durable. Disposable: Can only be used once and cannot be opened once locked. Easy Operation: This pull-tie security tag is easy to use and easy to install. Cutting tools are required for removal. 【Product Description】 Material: Polypropylene Total Length: 7.48 inches / 190mm Line Length: 120mm Effective binding circumference is within 120mm. Belt Diameter: 2.5mm Sign Size: 40 mm x 20 mm Color: White Packing Quantity: 100 pieces Applications: Airline cargo, banking, postal, courier, clinical waste management, warehouses, dining cars, luggage and apparel, logistics services, valves, ballot boxes, and other applications that require security seals to prevent transfer or theft during transportation. 【Advantages】 ・Sturdy stainless steel, easy to install 【Disadvantages】 ・The ring tag shape requires ingenuity depending on the item being sent. ・The buyer requires cutting tools to open, which is a bit of a hassle. ・Depending on the material of the contents, there is a risk of scratches during shipping.