Ultra-secure 75 cm long chain lock with 12 mm thick hexagonal links made from triple-hardened special steel, which leaves no chance for bolt cutters, saws, or files. The weatherproof nylon cover protects the bicycle from unsightly scratches or other damage. The robust Evolution Disc Lock system provides optimal protection thanks to the 14 mm thick shackle made of hardened Kryptonium special steel. The shackle features a patented Bent Foot design that is easy to handle and resistant to tampering. The reinforced high-security disc cylinder lock is secured against drilling. Additionally, the patented locking mechanism is extremely durable. A thick vinyl cover protects against damage. Chain lock with a security level of 9.