7 mm thick, hexagonal chain links made of extra-hard 3t manganese steel form a chain with a length of 85 cm, providing optimal protection. A reinforced high-security disc cylinder lock protects against picking and drilling. With Kryptonite's new "Integrated Chains" system, there is even less surface area exposed to attacks, as the chain and its links are directly connected to the locking cylinder, eliminating any external components. A weatherproof nylon cover protects your bike from scratches and allows for compact storage of the chain.