Numbering Design: The plastic numbering stamp is laser , not easy to fade, and the default serial number is clearly displayed on the front, which is convenient for recording information during use, and the total length is 250mm Tamper-proof: Tamper-proof seals are for one-time use only, and each stamp has a unique serial number for identification; once the seal is locked, it cannot be opened; 1000 self-locking stamps are enough High-quality material: plastic safety and tamper-proof seal is made of high-quality plastic, which is anti-aging, corrosion-resistant and good elasticity; it can withstand high temperature and has higher durability in extreme weather conditions; the digital zip tie seal is a tool perfect for kits as it is strong enough but not too hard to break EASY TO USE: These security seals are inserted and lock automatically; WIDELY USED: Numbered disposable tamper-evident seals for containers, trailers, trucks, , lorries, warehouses, doors, airlines, luggage, duty free, supermarkets and storage controls Features: Keep Your Property Safe: Our tamper evident seals are designed to keep your property safe from unauthorized access. DURABLE: Our seals are made of high-density plastic, making them durable in extreme weather conditions. Specification: Color: Yellow Material: plastic Size: . 250mm Package Contents: 1 set x security tags removal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.