Tough hardened steel disc lock Double locking Mechanism Rotating keyway cover included Anti-pick Oxford key design Replacement key service The Oxford Heavy Duty MAX is a tough, high security disc lock. This lock has a key replacement service. When you buy your lock, simply note down the number which comes either attached to the keys on a metal tag or is laser marked on each key. This disc lock has undergone rigorous independent testing and has been awarded Powered Cycle (Motorcycle) GOLD. Key Features • Tough hardened steel disc lock • Double locking mechanism • 14mm⌀ shackle • Rotating keyway cover included • Anti-pick Oxford key design • Replacement key service • Sold Secured Approved: Powered Cycle (Motorcycle) GOLD