Features: 1.Rust resistant, guard against theft. 2.The lock body made of durable steel and covered by black oxford fabric. 3.Security grade metal chain with reinforced fabric to protect the wheels. 4.Protective textile outer sleeve protects paintwork and rims. 5.The keys are not universal, the Interchangeability is only 2‰. 6.Suitable for a wide range of other security applications.