OXFORD LINLOCK SL FOLDING LOCKThe Linklock SL offers an excellent compromise between the solidity of a U Lock, the flexibility of a chain lock, and the compact portability of a cable lock. The Linklock SL has a key replacement service. When you buy your Linklock SL, simply note down the number which comes attached to the keys on a metal tag. Keep this in a safe place, then in the event that you are unfortunate enough to lose all your keys, it will be possible to get a new key made