The Axa Defender is a high-quality frame lock with a thoughtful design that allows you to plug in a cable or chain into the side of the lock, enabling you to secure your bike to a fixed object. The Defender ring lock offers optimal protection through its anti-drill cylinder and hardened steel shackle. The Axa Defender can be mounted in various ways. By default, the lock is installed with a flexible mounting kit that is applicable to any frame tube, but it can also be secured with a screw from above.