Kryptonite Unisex's Evolution Chain Lock, Black/Orange, 10mm x 90cm by Amazon.co.uk

• New patent-pending pin-less link design secures chain to hardened deadbolt, offers no "weak" link in the chain due to the extensive holding power of the link itself against attacks

• 10mm six-sided chain links made of 3t manganese steel

• High security disc-style cylinder is pick and drill resistant

• Resists most common hand tools

• Weather-resistant nylon sleeve prevents scratches to painted finishes

• Compact coiling for easy carrying

• Includes 3 stainless steel keys, 2 standard keys and one with a high-intensity LED bulb for convenient, easy unlocking in the dark