Homwarm Bike Lock Chain Lock Motorcycle Bicycle Wire Lock φ (Diameter) 22mm x 1200mm Sturdy Anti-theft 3 Keys Set U4 【Extra Thick & Extra Thick】 22mm diameter extra thick wire 10mm x PVC coat 12mm x nylon cover protects your precious car from criminals. We have adopted an even thicker, ultra-thick wire in pursuit of security. The main purpose is for customers to use the product with more peace of mind. 【Copper Cylinder & Key】 Equipped with a copper key cylinder, it can automatically spring back. It also has excellent anti-mite/rust/waterproof properties. In addition, the keys are also made of copper, making them difficult to duplicate, wear-resistant, durable, and can be opened smoothly forever. This is a high-strength, high-precision, rust-free, luxurious and durable product that can be used safely and conveniently. 【Dust-proof Shutter Design】 A dust-proof shutter is designed to be easy to use and less likely to clog, as it is common for dust and sand to get stuck in the shutter and make it difficult to open! 【Easy to Open and Close】 The key can be used on both sides, regardless of the front or back. When locking, simply insert the tip into the keyhole! When unlocking, insert the key, turn it around, and just pull out the tip! The operation is simple and not troublesome. The length is 1200mm and is applicable to a wide range of vehicles such as motorcycles, scooters, bicycles, and office doors!