The NEW Beast with X2P Dual Lock Down design offer ultimate protection in a lighter, more compact design combined with a 12mm chain. OnGuard chain locks offer cycle user extra length for locking versatility. Huge, titanium reinforced hexagonal and square links present more hardened surfaces than round links making sawing and cutting virtually impossible. Titanium surface hardening vastly increase cut and saw resistance. Velcro tabs keep cover in place to help protect paint and finishes. Shackle dimensions: 11mm hardened steel Chain dimensions: 110cm x 12mm Key Features: Z-Cylinder is bump proof and resists picking, drilling and pulling, Embroidered nylon chain covers wont crack or peel for long lasting beauty, Weatherproof lock, Includes 5 laser cut keys, 1 with in built Micro LED, .