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A high security shackle lock which is of medium weight and has easy-to-use features.


  • The sentinel and sentinel duo has a key replacement service. When you buy your sentinel, 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 up for you.
  • This shackle lock has undergone rigorous independent testing and has sold secure bicycle silver.
  • Medium weight
  • New unique and clever carry bracket, will fit most bikes
  • Hardened steel, heavy duty construction
  • Vinyl coated to protect bicycle paintwork
  • Sentinel duo comes with an added cable lock

Oxford Sentinel Plus U-Lock Duo 14mm x 320mm

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