Suitable for multiple scenarios: The extra-long 1.5-metre length easily covers the locking needs of different vehicle types, such as bicycles, electric bikes, and motorcycles. The 11mm thickened steel chain is more than 50% stronger than ordinary chains, allowing it to securely wrap around the vehicle body and fixed objects, avoiding security vulnerabilities caused by insufficient length or overly thin chains. Comprehensive anti-theft design: Made of high-hardness alloy steel and specially heat-treated, it can effectively resist violent destruction by professional tools such as hydraulic cutters, saw blades, and pry bars. With a shear strength of over 20 tonnes, it physically eliminates the possibility of theft. Adaptable to extreme environments: The chain surface is covered with multiple layers of electroplated anti-rust coating, combined with a sealed lock core design, enabling it to withstand harsh weather conditions such as heavy rain, high temperatures, and humidity. Even with long-term outdoor use, it is unlikely to rust or jam, extending its service life by more than three times. Multi-vehicle compatibility: No need to purchase separate locks for different devices such as bicycles, electric scooters, motorcycles, and strollers. The 1.5-metre length and thickened steel chain can be flexibly adapted to the locking needs of various vehicle types, saving procurement costs and storage space. Safety and convenience combined: Equipped with anti-duplication copper core keys for smooth unlocking without jamming; rounded edges on chain connections to prevent scratching the vehicle body or hands during use; lightweight design for easy carrying while riding., Manufacturer: Ddxycfzy