Numbering Design: The fire extinguisher seal is laser printed with a default serial number displayed in black letters, convenient for recording information during use. The total length of the stamp seals is 9.8 inches (250 mm). Tamper Proof: Numbered zip tamper seals are single-use and feature unique sequential identification numbers. Pull tight plastic tags cannot be reopened once locked. Includes 1000 self-locking stamp seals to meet your needs. Quality Materials: Plastic security tamper seals are made of durable plastic material resistant to aging, corrosion, and offer good resilience. Numbered zip seals provide reliable security while remaining practical for everyday use. Easy to Use: Pull-up ties can be easily torn off by hand in emergencies. Features a self-locking mechanism with adjustable length for convenience. Simple to operate without tools, saving time. Wide Application: Disposable numbered tamper seals are suitable for fire extinguishers, first aid kits, zippered bags, cables, luggage, hospital equipment, banks, duty-free shops, supermarkets, ID tags, sprinkler systems, tractors, and trailers. Pull-tight seals are commonly used in retail stores for securing luggage, bags, shoes, and clothing as security tags. Also ideal for use on fire extinguishers, emergency exits, ambulances, and protective packaging during transportation. Single-use design with self-locking mechanism and adjustable length. Hand-tearable without tools for quick access. Total seal length: 9.8 inches (250 mm). Color: Multicolor (4 colors: yellow 400 pcs, light blue 200 pcs, green 200 pcs, red 200 pcs) or yellow only. Material: Plastic. Package Contents: 1000 x Security tags. Note: Light reflection and display differences may cause slight color variations between the image and actual item. Measurement error allowance is +/- 1-3 cm.